IR Double AB Chanel Wireless Headphone

Brand Name: cranepower Model Number: HW-2012 Style: Headband Communication: Wireless Connectors: IR Use: car Function: Noise Cancelling Place of Origin: China (Mainland) placement: auto seat material: ligh EP quality: sgs specilized: IR wireless Packaging & Delivery Packaging Detail: White package Folding type inter box size:655X475X525mm In box size:122X89X126mm Gross weight: folding type:24.6KG(1X100PCS) Net weight folding type:18 KG(1X100PCS) Delivery Detail: 2-15 dys Specifications IR double chanel wireless headphone                   IR-2011D HEADPHONE OF INSTRUTION                Infrared receiving headphone               Use instrution Fitted with two 3A/LRO3/UM4(NO.7)battery in the WIR-2010C and be used with the transmitter ,please pay attention the battery polarity.Turn on,adjust the volume,you can listen now.Adjust the L/R channel for the best sound."off" means turn on/off," A" means A channel,:"B"means B channel. III.Technical parameter Features:    1.Suitable for car audio system, for car use.2.Mini jack for audio input like MP3, iPod3.Ultra light design for comfortable wearing4.Operating distance: up to 12 meters5.Auto mute function and automatic shut-off after 10 min of no signal detection6.Built-in 30 mm Mylar speaker to deliver audiophile grade sound quality7.Several headphones can be used simultaneously with one audio transmitter source Specifications:1.System infrared light (850nm)2.Carrier frequency:a) A channel: left channel :2.3Mhz / Right channel: 2.8Mhzb) B channel: left channel : 3.2Mhz Right channel: 3.8Mh3.Signal to Noise: >60db4.Channel Separation: >45db5.Distortion: <1%6.Frequency Response: 30-20,000Hz7.Power Supply: 2 x AAA Batteries (Not Included) IV.Clear general trouble  question         trouble analysissolutionsno voiceThe headphone is turned on,or the battery has power?turn onThe USB cable of transmitter error reconnectnoiseLow-quality audio/Near the sun/Transmitter was blockedreadjustpoor soundqualityLow-quality audioadjust audioThe battery has not enough power charge battery  V.Attention       Please note the following things in order to ensure good sound quality:This product an not be used outdoors,because of the ultraviolet sunlight interference.Do not use the headphone near the sunlignt to avoid the noise interference.To ensure good reception,please try to keep headphone in front of the transmitter.Do not use the low-quality audio,that will damage the headphone,or make a big noise.When the power is low,the sound will distorted,please charge the battery.Adjust the input audio volume,no too small or too large.A long time no use please get the battery out.VI. Packing size/weight  White packageFolding typeOut box size:655X475X525mmIn box size:122X89X126mmGross weight:Folding type:24.6KG(1X100PCS)Net weight :Folding type:18 KG(1X100PCS)