Brand SOUND FRIEND Model SF-SH009B Quantity 1 Color White Bluetooth Version V3.0 Ear Coupling Over the Ear Talk Time 8~10 Hour Standby Time 180 Hour Operating Range 10 meter Compatibility V3.0 and the earlier version Microphone Yes Supports Music Format MP3 Built-in Battery Capacity 3.7V 300mAh Compatible With The device with Bluetooth V3.0 and the earlier version BQB Certification No Other Features Built-in lithium battery capacity: 3.7V 300mAh; Bluetooth model: Bluetooth headset Bluetooth handset-free; High quality and stylish. Packing List 1 x Headset 1 x USB cable (76cm) 1 x Chinese / English user manual