Product detailsModel: BQ – 618 Color: Black,White Wearing type: Headband Function: Answering Phone,Bluetooth,HiFi,Microphone,Noise Cancelling,Song Switching,Voice controlConnectivity : Wireless Application: Aviation,Computer,DJ,Mobile phone,Portable Media Player Plug Type: AUX-IN Frequency response: 20~20KHz Impedance: 32ohms Working Voltage: DC5V / 500mA Working Time: 10 hours Talk time: 15 hours Music Time: 10 hoursBluetooth: Yes Bluetooth version: V4.0 + EDR Bluetooth distance: W/O obstacles 10m Bluetooth protocol: A2DP,AVRCP,HFPPackage weight: 0.227 kg Package size (L x W x H): 19.00 x 16.00 x 5.00 cm / 7.48 x 6.3 x 1.97 inchesPackage Contents: 1 x BQ – 618 Smart Wireless Bluetooth Stereo Headphones with MIC Support 3.5mm Stereo Audio Input, 1 x 3.5mm AUX Audio Cable, 1 x USB Charging Cable, 1 x Bilingual User Manual in English and Chinese