Brand ORICORE Model K700 Color Silver + black Type Bluetooth Stereo Headset Bluetooth Version V2.1+EDR Ear Coupling Behind the Neck Talk Time 12 Hour Standby Time 300 Hour Operating Range 10 meter Compatibility V1.1V2.0 Microphone Yes Radio N/A Supports Music Format MP3 Power Supply Built-in Battery Built-in Battery Capacity 300mAh Other Supports A2DP & AVRCP; Frequency response range: 2400.0~2483.5MHz; Charging time: 2~3 hours Packing List 1 x Bluetooth stereo headset 1 x Power adapter (100~240V / US plug) 1 x USB charging cable (40cm) 1 x Chinese/English user manual