Description: Brand: QCY50 Bluetooth specification: Bluetooth 4.1 + EDR Bluetooth profiles supported: A2DP \/ AVRCP \/ HPF \/ HSP Driver Size: 40 mm SNR: 114 ± 3dB Speaker Impedance: 32Ω Frequency response: 20Hz-20kHz Standby time: 390 hours Playing time: 10-12 hours Battery: Built-in rechargeable 200mAh lithium-ion battery Weight: 145g Features: 1.Compatible with Bluetooth enable devices, such as iPhone,iPad, Xiaomi, HTC,Lenovo,Samsung,Tablet,PC,etc. 2.Enhanced noise reduction,good choice for listening music,watching movie,talking on the phone,etc. 3.Conversation from Bluetooth-enabled cell phones. 4.Build-in rechargeable li-battery,charge via USB cable for 1-2 hours Package included: 1 X QCY 50 Wireless Bluetooth 4.1 Headphone with Mic 1 X Charging USB Cable 1 x User Manual