Brand N/A Quantity 1 Color White + Silver Bluetooth Version Bluetooth v3.0 + EDR Operating Range 10 meter Compatibility N/A Microphone Yes Supports Music Format MP3 Power Supply Built-in Battery Built-in Battery Capacity 650mAh Other Features Interface: Mini USB; Working frequency band: ISM 2.4~2.48GHz; Protocol supported: Hands-free headset; Supports connect two devices at the same time; Maximum 8 matching devices memory (Unique technology supports dual-phone connection and online standby at the same time); Built-in DSP noise suppression and echo cancellation function; With high fidelity speaker and high sensitivity microphone; Battery type: 3.7V 650mAh; Talk time: 15~16 hours; Standby time: Long as 1000 hours / 41 hours; Charging time: 2~3 hours. Packing List 1 x Multi-point speakerphone 1 x BL-5B Battery 1 x Car charger adapter (12~24V) 1 x USB charging cable (62cm) 1 x Back clip 1 x Chinese / English user manual