Cool Bluetooth Wireless Cardreader Waterproof Laptop Headphone DE1880

Brand Name: DAWAN Model Number: DE1880 Style: Headband Communication: Wireless Connectors: wireless Use: Portable Media Player Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Color: Black Model Type: 40mm Impedance: 32ohm±15% at 1KHz Output S.P.L: 106±3dB AT(800,1K,1.2K,1.5K)HZ Resonant Freq.FO: 220HZ±20% Frequency Response: 2O~20000Hz Input Power: 20mW/Max.Power 30mW Buzzes&Rattles: Must be normal 100~3KHZ/ 600mV 100-3KHZ/ 600mV Distortion: Less then 5% after input rated power 1kHz Type: Bluetooth wireless cardreader waterproof laptop headphone Packaging & Delivery Packaging Detail: Blister package as picture Delivery Detail: around 30 days Specifications Bluetooth wireless cardreader waterproof laptop headphone DE1880 1. 180 hours battery support 2. Support TF card and FM funct Bluetooth wireless cardreader waterproof laptop headphone DE1880  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