Specifications A+++ quality,brand new,box packaging,factory price,good service,many different designs and model available,fast delivery!!! Dear friends,the products have logo and the products are in sealed box,if you are interested,please contact us,thanks!
Specifications Bluetooth Stereo Headset Mic Laptop Headphones cheap earphone for iphone/ipad/laptop/ps3 Bluetooth Stereo Headset Mic Laptop Headphones cheap earphone for iphone/ipad/laptop/ps3Features:Bluetooth wireless headphoneThe built-in microphone and call-forwarding functionRemote control the function of PAUSE/PLAYRemote control last/next songAdding and connecting your bluethooth devices immediatelyControlling answer calling and reject callingControlling volume up and volume downSpecification:colour:white(there are six colours of this headset:black,white,red,pink,blue,orange)BlackType: Bluetooth 2ch stereo audio headsetBluetooth version: Bluetooth v2.1+EDRSupport profiles: Headset, Hands free, AVRCP, A2DPEffective range:10 metersMusic Playing Time: up to 10 hoursTalk Time: up to 11 hoursStandby: up to 250 hoursCharging Time: 3 hoursInput:DC:5v/130mAFrequency range: 20-20 000 Hzwidth of the headset:3.2cm/0.096ftmax diameter:15cm/0.45ftmicrophon
Specifications Bluetooth headphone 1.In-ear design 2.Active noise cancellation Specification:The headset supports Bluetooth V3.0+EDR and also V2.0/2.1 with handsfree,headset profileStandard:Class IIRange of frequency:2.4GOperation distance:10MBattery standby Time:72hoursRechargable Battery: 2 hours Effective range of 32 feets (10M).Charge current:5V Features:Design for use with Bluetooth-enabled mobile phonesEnhance noise reduction for crisp, clear soundExcellent sound qualityAllow simple hands-free answering. Just say answer or ignore to handle your callsRemark: 1. The basic price offer is not include any license, the upcost for license is according to customer's requirement. Item No.:FWHS-700Description:BLUETOOTH HEADPHONEColor:BlackUnit Size:5.4(L)x1.8(W)x2.5(H)CMCertification:According to customer's requirementLicense: Minimum Quantity:10
Brand Name: Share Ezone Model Number: SEZ-V8 Style: Ear Hook Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Microphone Place of Origin: Guangdong China (Mainland) audio type: Mono Bluetooth version: version 2.0 design: ergonomic design for human beings wearing type: wireless Bluetooth or wired earphone weight: light weight with 11g Packaging & Delivery Packaging Detail: blister and card Delivery Detail: 25-30 days Specifications 1.Smart and slim in-ear Bluetooth headphone 2. hook and external earphone as back up. 3. Support customized colors and design. Model no.#: SEZ-V8 Slim Wireless or Wired Mono Bluetooth headset Highlight Features:1. mono Bluetooth headset2. Slim appearance but smart performance.3. ergonomic design for your best comfort and safety. 4. multi-point connection. 5. either wear to earbud or ear
Brand Name: Esino Model Number: ES-SP-A005 Style: Headband Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Name: earmuff bluetooth wireless headphone / stereo wireless headphone Packaging & Delivery Packaging Detail: Gift box Delivery Detail: 3 working days Specifications bluetooth 2ch stereo audio headset RF Frequency Range:2.402-2.480GHZ,2.4G Rechargeable 380mAh Li-polymer Battery bluetooth 2ch stereo audio headset Specification: 1.Bluetooth specification: V2.1+EDR2.Bluetooth profiles supported: HSP, HFP, A2DP and AVRCP3.Operating distance: 10 meters Class II Rechargeable 380mAh Li-polymer Battery 4.Rechargeable 380 mAH Li-polymer battery5.Talk time: Up to 6 hours6.Music playing time: Up to 6 hours7.Standby time: Up to 100 hours8.Charging time: About 1.5 hours9.Charge input voltage: DC 5V10.Dimensions: L33.8*W15.7*H10mm11.Weight: 220 g
Brand Name: ODM OEM Model Number: HP-042 Style: In-Ear Communication: Wireless Connectors: 3.5mm Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) color: black Packaging & Delivery Packaging Detail: color window box Delivery Detail: within 15 days Specifications Bluetooth Headphone Bluetooth Headphone 1,built-in 60mAh Li-polyner Battery.2,Charging Time:1.5 hours3,Talk time:4 hours4,Standby time:80 hours5,different colors are optional6,CE approval
Brand Name: OEM Model Number: BH99B Style: Ear Hook Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) color: pink price: cheap bluetooth headphone: bluetooth headphone Bluetooth Headset V2.0 EDR: Bluetooth Headset V2.0 EDR Long talking time: Long talking time Cheaper price: Cheaper price Talking time: Up to 4 hrs Accessories: Retail box user manual: user manual USB Cable ear hook: USB Cable ear hook Packaging & Delivery Packaging Detail: - Box: standard or customization - User Manual x1 - USB Cable x 1 - Charger: car charger or Travel charger Delivery Detail: 1-3 woking days Specifications 1)bluetooth headphone 2)Bluetooth Headset V2.0 EDR 3)Long talking time 4)Cheaper price 5)Talking time: Up to 4 hrs Product name : Bluetooth mono headsetBluetooth Headset V2.0 EDR, 10mTalking time: Up to 4 hrsAccessories: Retail box, user manual, USB Cable ear hook
Specifications Stereo bluetooth headphone 1,Good design 2,Perfect sounds 3,Quite beautiful Stereo bluetooth headphone NameStereo bluetooth headphone MaterialABSColorBlack,green,red,white and more. DesignBluetooth headset designApplicationFor mobile ,PC,Tablet HD, Feature1. Answer calls,play/pause music directly from your headset, joy in HD stereo tone quality;also may use the stochactically present free cable to conect the auto device without bluetooth function. 2. Foldable design is so easy to carry. 3. Advancement of metallic which is superior to plastic style makes powful tone quality. 4. Adopting NdfeB to make bass, high pitch, stereo and dynamic sound,more excellent and natural. You can feel confortable even in several hours,benifit form the adjustable head band&super soft ear pad 5. Complete operation,you can put the cellphone in the po
Brand Name: JNP-Tech; OEM Model Number: JNP-HK800BT Style: Headband Communication: Wireless Connectors: Bluetooth Use: Mobile Phone Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Compatibility: Mobile Phone, PC, MP3 player, etc. Size: 35*18*8cm Net Weight: 100g Color: Black Packaging & Delivery Packaging Detail: Gift color box package or customized design. Delivery Detail: 25 days Specifications 1. Support A2DP, AVRCP, headset, hands-free profile. 2. Pillow-soft ear cushions. 3. Hi-fi quality, crystal clear sound. Basic Information Faster connecting, clear sound, anti-interference. Advanced audio transmission mode. Bluetooth Version: V2.1 + EDR, Class II. Support A2DP, AVRCP, headset, hands free profile. Buttons: Play/ Pause, VOL +, VO -, Call/ Receive. Blocks 4 times the external noise to get crystal clear sound. Holding time: around 7 hoursWorking distance: 10 meters Battery: Rechargeable, non-replaceable Lithium
Brand Name: Moccer Model Number: MS2090-B Style: Headband Communication: Wireless Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) Color: Whiter,Blue,Purple,Black and Red Packaging & Delivery Packaging Detail: gift box Delivery Detail: 25 days Specifications Hands-free call,built-in Mic Support TF card Wireless bluetooth handphone headphone for ipone 4 iphone 5 MP3 player 2013 New products Headphones Bluetooth headphone for iphone 4 Function: 1.Extreme comfort from adjustable head band and earplug. 2.Embedded microphone for hands-free conversation from Bluetooth-enabled mobile phones. 3.Pause the music & Play back automatically when receives an incoming call. 4.Support remote control of play/pause, previous/next track, volume up and volume&
Brand Name: DENO Model Number: R6250 (115) Style: Ear Hook Communication: Wireless Connectors: Bluetooth Use: Mobile Phone Function: Bluetooth,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) BQB: YES FCC: YES CE: YES ROHS: YES Packaging & Delivery Packaging Detail: Gift Box Delivery Detail: 20 days Specifications 2013 Mobile Phone Mono Bluetooth Headset R6250(bluetooth headphones for cell phones) The Smallest Mono Bluetooth Wireless Headset R6250 for iphone and other smart phone Our Advantage:1.Hot and Popular Model2.Great and Very Competitive Price 3.The smallest bluetooth headset4.Stable and Good Quality5.Support multi-point connect Main Features: 1.Bluetooth headset with built-in rechargeable Li-battery2.Bluetooth headset , suitable for different bluetooth mobile phones3.Bluetooth mono call center headset, low end and long talk time4.Bluetooth headset with adjustable volume and 10 meters effective range5.Stylish m
Specifications Double Mic Noise Cancellation Bluetooth Headset high quality.pretty bluetooth headset Suitable for one or two earsAdopt the most advanced dual-Mic noise cancellation tech to stop any interference, ensure all conversations can be free from obstruction.DSP for crystal sound qualityComfortable for all day useHigh performance with Bluetooth 2.1 EDR techBattery indicatorRadius of transmission-10 metersspecification:Chipset:CSR BC5 V2.1Support:A2DP,AVRCP,Headset,Headfree,Noise-Canceling,Voice-Dial/MuteBroadcast Range:10MTalking Time:4 hoursStand-by time:100 hoursColor: BlackNet weight:10gPackage includes:1 X bluetooth headset1 X power charger1 X ear hook1 X English manual
Brand Name: OEM Model Number: headset Style: Headband Communication: Wireless Connectors: 3.5mm Use: Portable Media Player Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: anti-static bag,paper box,polybag. Delivery Detail: within 48 hours after received payment Specifications 1. Headphone with Leather earpad, more comfortable 2. Music heaphone with High-Fidelity, 3. Headset with Foldable design Best sale top quality most popular brand name bluetooth headset Key specifications:Bluetooth specification: V2.1+EDRBluetooth profiles: HSP, HFP, A2DP and AVRCPOperating distance: 10 meters Class IIRechargeable 430 mAH Li-polymer batteryTalk time: Up to 16 hoursMusic playing time: Up to 14 hoursCharging time: About 3 hours Special features:Folding and retractable design, easy to take with you.Enjoy stereo music wirelessly from Bluetooth A2DP d
Specifications 1.New unique design !! 2.bluetooth stereo headphone noise cancelling 3. deep bass for DJ MODEL: JB-1002 Type: headsetWearing style: Headband Function: Bluetooth stereo NFCBluetooth specification: Bluetooth V4.0 + EDR Support Agreement: A2DP, AVRCP, Handsfree HeadsetTransmission range:10mTransmission frequency: 2.4GHzTransmission power: class 2Suitable for: all kinds of mainstream mobile phone modelsColor: red, black, white, blue, purple, green, etc. The main parametersSpeaker: 40mm diaFrequency range:20-20000HzImpedance: 32Ω Sensitivity: 105dBTotal Harmonic Distortion: ≤ 1%Operating voltage: 3.7V Operating Current: 20mANoise reduction featuresBluetooth function: supportCharging Interface: DC 2.5mmCable Access products: 3.5plugBattery Type: Li-on battery Battery Capacity: 240mAhCharging time: 2.5hours Working time: Up to 8 hours
Brand Name: senfeng Model Number: 2218 Style: Ear Hook Communication: Wireless Connectors: other Use: other Function: Bluetooth Place of Origin: Guangdong China (Mainland) color: black Packaging & Delivery Packaging Detail: color box Delivery Detail: 4-6weeks Specifications Super thin bluetooth headset good quality and hot sale! bluetooth headset v2.0+EDR,Class II Chipset:Terax Bluetooth V2.0,class2,range:10meters Support handsfree and headset profiles With removable ear-hook With super bright LED indicator lights Built-in rechargeable Li-Polymer Battery Talk time:3hours Standby time:60hours Weight: 6g Size:38*16*6mm Accessories:BH320 headset*1Earhook*1USB Cable*1USB A/C charger*1(option)English Manual*1 Packing info1 piece/gift box120pcs/ctnGW:11.5kgsCarton size:52*50*36cm
Brand Name: SKY Model Number: SK-008 Style: In-Ear Communication: Wired Connectors: 3.5mm Use: Mobile Phone Function: Bluetooth,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) 6P: YES 16P: YES CE: YES Color: Black and White Usage: mobile phone ROHS: YES Support: customers' logo print and color available Package: blister or OEM customers' request Distortion: 2% Sensirivity: -58dB±3dB Packaging & Delivery Packaging Detail: 1pc/Blister Package or Color Box, Common Export Carton Delivery Detail: 20-25 days after confirming all Specifications Fashional Shape Bluetooth Headphone 1. Pretty cool appearance 2. CE & ROSH 3. Best price Fashional Shape Bluetooth Headphone Features:1) Special for all audio equipment2) Colors: Depends on the costomer's demand3) OEM BRAND4) Good sound quality5) High quality stereo earphones for MP3 /
Specifications - Bluetooth Stereo Headset - Stereo Bluetooth headset - Supports Bluetooth A2DP, AVRCP 100% high quality , absolutely factory price !!!welcome to wholesalelook forward to cooperating with you Bluetooth Stereo headset R36 bluetooth headphone Specifications: ¦Bluetooth Version: V2.0¦Compatible with: V1.5, V1.2, V1.1, V1.0 ¦Transmit Power: Class2 ¦Frequency: 2.4-2.48GHz¦Transmissio n Distance: Up to 10m ¦Charging Time: 2-3 hours¦Talk Time: Up to 6 hours¦Standby Time: Up to 150 hours¦Size: 55 x 24 x 27 mm/2.17 x 0.94 x 1.06 in(L x W x H) Features: ¦Stylish, comfortable and engineered with cutting-edge Bluetooth wireless technology ¦Wireless stereo Bluetooth headset allows you to make and receive phone calls at ease¦Digital sound enhancement via DSP
Specifications 2012 New Smallest Bluetooth Headsets/Metal Case Bluetooth Headset of Best Price/Noise Cancelling Bluetooth Headset BH19 2012 New Smallest Bluetooth Headsets/Metal Case Bluetooth Headset of Best Price/Noise Cancelling Bluetooth Headset BH19 Size: 49.3X15.8 X6 mm Weight:9g Bluetooth Standard: CSRV2.1 version, banwidth 3Mbps Wireless Frequency Range: Global-used 2.4GHz ISM Frequency Transmission Range:10M Battery: Li-polymer 75mAh Stand-by:75hrs Holding Time:3hrs Color:Black Support blue tooth: Receive/Reject/End a call, Voice dial, Last number redial , Mute Function, Volume Adjustment.
Brand Name: SMS Model Number: SMS 50 cent Style: Headband Communication: Wireless Connectors: 3.5mm Use: Portable Media Player Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: China (Mainland) Packaging & Delivery Packaging Detail: Original pacakge . Delivery Detail: 5-15days Specifications Ergonomically designed Noise cancelling SMS 50 cent earphone ,in-earphone, headphone. wired headphone, bluetooth headphone This item have three kinds:1. In-earphone2. Bluetooth headphone3. wired headphone
Brand Name: JEL Model Number: JEL-999-01 Style: Headband Communication: Wireless Connectors: wireless Use: Portable Media Player Function: Bluetooth Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: 1. bubble bag+white box 2. plastic +paper card 3. plastic+ color box 4. customized packing 4 Delivery Detail: according to the quantity of the order Specifications 1.Wireless Bluetooth 2.Lightweight 3.Colourful 4.Soft leather earmuff protect ear from long-time wtearing 5.CE,ROHS certific Bluetooth Protocol StandardVersion3.0+EDRWireless Frequency Range ISM 2.402 to 2.480GHz Transmit PowerClass 2 Wireless Range10mContact termsMulti-point connectionRegular Socket3.5mm audioDrive unit30mmImpedance32ohmsSensitivity115dbFrequency20-20000hzMax. Input Power30mwDe-noise Microphone -42dB+/-3dB Battery type3.7V 600mAh/523436 Charging
Specifications bluetooth headphones color:as request best quality fast delivery time Welcome to contact me:cn1001172591(Milly) Detail of bluetooth headphones 1. Items:bluetooth headphones 2. Color: as request3. Material: as request4. best quality5. style: fashionable 6. Minimum order: 1 piece7. Supply Ability: 5000 pieces/week8. Inventory: in stock9. Packing: standard package10. Delivery time: within 48 hours after we confirm the payment11. Arrival time: It takes about 7 to 10 days12. Type of shipping: EMS, DHL, china post, ARAMEX etc13. Terms of payment: western union, money gram, bank transfer, paypal etc. We can promise 1. The quality of our goods.2. Fast delivery time3. Small order can be accepted4. Safety shipping 5. Lowest price6. Mix items can be ordered together.7. OEM service is available. Wholesalers and retailers are welcomed Any questions, contact me freely.trade manager: cn1001
Specifications wireless bluetooth headphones for tv 1.CSR chipset with two microphones; 2.noise cancellation function. wireless bluetooth headphones for tv Item No.HF880size178 x 149 x 70 mmweight155 gBluetooth Standardbluetooth V2.1+EDRFrequency Range2.400-2.481GHzOperationClass 2Bluetooth Modeheadset/handfree/A2DP/AVRCPOperating rangeup to 30 feet (10 metres)Talk Timeup to 18 hoursPlaying Timeup to 10 hoursStandby Timeup to 400 hoursCharge VoltageAC:input 110-240V, DC:output 5.3VSpecial Feature 1TF card is availableSpecial Feature 2The best partner of instrument with Android & IOS system
Brand Name: ICABLELINK Model Number: DIS30091 Style: Headband Communication: Wireless Connectors: 3.5mm Use: Mobile Phone Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Brand: new Quality: super Color: white Talking time: Up to 6 hours Warranty: 1year Certificate: CE&FC Packaging & Delivery Packaging Detail: Color box Delivery Detail: 3-5days Specifications Waterproof Bluetooth Headphone with microphone 1.Up to 6 hours talking time 2.All in one,no need extra cables Waterproof Bluetooth Headphone with microphone for iphone 5 samsung S4 Feature 1.Stand alone solution for Bluetooth headset and Waterproof function;2.CSR Bluetooth IC ensure the high qulity3.Stero Headphone with waterproof Microphone4.Up to 6 hours talking time5.All in one,no need extra cables6. IPX8 ensure you can enjoy music or phone call in any conditions.
Specifications 1.bluetooth headphones with speakers; 2.foldable&portable design; 3.3 in1 design; 4.PRV/NEXT/Play/Pause/Answer/Stop Calls; Unique Product Features:bluetooth headphones bluetooth headphones bluetooth headphones1. bluetooth headphones with speakers; 2. foldable & portable design; 3. multifunctionality; &nbs
Specifications 10m connection Built-in microphone and rechargeable Li-ion battery Key Specifications 1.Frequency response : 20 Hz – 20KHz 2.Bluetooth® : V2.1 + EDR 3.Transmission Mode : GFSK 4.Operating voltage : 3.7 V 5.Signal-to-noise ratio : > 80 dB 6.Channel separation : >30 dB 7.Distortion : <2% Feutures: 1. Pause the music & Play back automatically when receives an incoming call 2. Micro USB connector allows charging via AC power adaptor or computer USB por
Brand Name: Shuerr Model Number: SER-HEB-021 Style: Headband Communication: Wireless Connectors: No Plug Use: DJ Function: Bluetooth,Noise Cancelling,Microphone,DJ Headphones, Computer, Mobile Phones, Skype, Mediaplayer Place of Origin: Guangdong China (Mainland) Color of the headband: Can be customized as Pantone Color Raw material of the headband: Plastic & ABS Leather Sheath: Can be customized as different level Logo Imprints: Can be printed on headband OEM Service: Is available Shape of the plastic casing: Can be square Usage: Computer, Portable Media Player, Mobile Phones, Smart Phones,etc Connection Plug: Nickel Electroplating or Gold Electroplating Certificate: CE, Rohs, FCC(if required) Packaging & Delivery Packaging Detail: PE Bag,Gift Paper Box,Plastic Case or other customized package Delivery Detail: About 25-30 days against you confirm the approval samples Specifications Wireless Headset Bluetooth Headphone 1.Excellent bass sound 2.Color can be customized 3.OEM is avai
Specifications 1.stereo bluetooth headphones 2.good sound quality 3.Rechargeble battery 4.CE,FCC,RoHS 5.one year warranty 2012 Fashionable and modern stereo bluetooth headphones Description: -USB wireless transmitter,universal compatible to PC Windows 2000/XP/Vista/7.0 -Easy installation, plug and play, pairing automatically -High-quality, uncompressed stereo audio, excellent for PC games, music & movies applications,can be used with a mobile-phone or play-station or a hifi-system at home to listen to music.-Opional Adapters for TV/IPod/MP3 and other audio applications -External microphne, free chat styles for PC common calling applications such as SKYPE/Yahoo!...ect. -Volume,play,pause controls -Stylish desigh DIY decorative patterns -Rechargable Li-ion Polymer battery built-in -Wireless Connection Distance: up to 10 m (33 feet) -Working time: up to 9 hours -Packing: Clamshell Blister or Giftbox
Brand Name: Sinoband Model Number: HTH-021BT Style: Headband Communication: Wireless Connectors: Bluetooth Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) Color: Green Packaging & Delivery Packaging Detail: Blister Packing 40pcs/carton Size:42*35*34cm G/W:7.5KG Delivery Detail: 5-10Days Specifications 1.Bluetooth headphone 2.Hidden omni-directional Microphone 3.10m 360 degree range with no cords Built-in rechargeable battery 1: Bluetooth 2.1 wireless transmission protocol 2: Transmission distance and range(10m, 360°) &n
Brand Name: Hensallcd Model Number: for Bluedio 610 Style: In-Ear Communication: Wireless Connectors: USB Use: Portable Media Player Function: Bluetooth,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) Transmission distance: 15 M bluetooth profile: Headset A2DP,AVRCP,HFP1.5,HSP1.1 Status: In stock Plug: AC Name: Bluetooth Headset In box packing Packaging: anti-static bags with foam box Leads time: 1-3 days Shipping: DHL,EMS,UPS,HKost,ChinaPost Guarantee: 6 month fit for: Bluetooth Headset 610 Packaging & Delivery Packaging Detail: Packed with anti-static bag and foam box Delivery Detail: Within 1-3 days after confirm the payment Specifications Bluetooth Headset for Bluedio DF610 1. 100% test by QC 2. Competitive factory price 3. Best sale service The details For Bluedio 610 Multimedia Bluetooth Headset as follows: With the unique slim design of Bluetooth headset, for BluedioDF610II possess a series of creative performance. Bluetoo
Brand Name: ATI / OEM / ODM Model Number: SH36 Style: In-Ear Communication: Wireless Connectors: 2.5mm Use: Mobile Phone Function: Bluetooth,Waterproof,Noise Cancelling,Bluetoth Headset Place of Origin: Guangdong China (Mainland) Operation range:: Up to 10 meters Bluetooth version:: V2.1+EDR Talk time:: Up to 3.5 hours Packaging & Delivery Packaging Detail: white box Delivery Detail: 10 - 20days Specifications waterproof bluetooth headphones range: Up to 10 meters Bluetooth version: V2.1+EDR Headset and Hands-free , A2DP, AVRCP waterproof bluetooth headphonesOperation range: Up to 10 metersBluetooth version: V2.1+EDRHeadset and Hands-free , A2DP, AVRCP. 1Operation range: Up to 10 meters Bluetooth version: V2.0 Talk time: Up to 3 hours Standby time: Up to 100 hours Charging time: 1-2 hours Battery type: Rechargeable Poly- Li battery size:36.5mm*16mm*9.6mm, weight:6.6g &nb