Brand ZONPKI Model Z-B97 Quantity 1 Color Black + light brown Bluetooth Version V2.1 + EDR (A2DP stereo transmission) Ear Coupling Sport Talk Time 6 Hour Standby Time 100 Hour Operating Range 10 meter Compatibility V2.1 + EDR Microphone No Supports Music Format MP3 Built-in Battery Capacity 3.7V / 150mAh Compatible With No Other Features Interface: Micro USB; Audio range: 20Hz~20000Hz; Frequency range: 2402MHz~2480MHz; Sensitivity: -80dBm; Wireless transmitter standard: Class 2; Channel: 79-channel of 1MHz BW; Contract terms: Point to point; Transmission range: Packing List 1 x Bluetooth headphones 1 x USB cable (102cm) 1 x Chinese / English user manual