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Brand Name: DAWAN Model Number: DE1880 Style: Headband,Cool Communication: Wireless Connectors: Bluetooth Use: Mobile Phone Function: Bluetooth,Waterproof,Noise Cancelling,cardreader Place of Origin: Guangdong China (Mainland) Color: black battery: 180 hours support Type: wireless Charater: waterproof Used for: laptop Read: TF card Charge: USB Function 2: FM radio Packaging & Delivery Packaging Detail: Blister package as picture Or OEM package Delivery Detail: around 30 working days Specifications Cool wireless cardreader waterproof laptop headphone DE1880 1. 180 hours battery support 2. Support TF card and FM function Cool wireless cardreader waterproof laptop headphone DE1880 Wireless Parameter: 1. Model Type:φ40mm 20mW\32 ohm NdFeB With Mylar Cone Speaker2. Impedance :32ohm±15% at 1KHz3. Output S.P.L :106±3dB AT(800,1K,1.2K,1.5K)HZ4. Resonant Freq.FO :220HZ±20%5. Frequency Response:2O~20000Hz6. Input Power:Rated Power 20mW/Max.Power 30mW7. Buzzes&Rattles:Must be normal 100~3KHZ/ 600mV 100-3KHZ/ 600mV8. Distortion:Less then 5% after input rated power 1kHz
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