Bluetooth Name: V8 Charging Voltage: Micro USB 5V / 0.5-1AH Working Current: 10 - 20mA Bluetooth Working Range: 10 - 15M Output Power: 2 x 18 mW Battery: 3.7 V / 400MAH(Polymer Rechargeable Battery) MIC: 4015 45 DB + 3 DB General Specifications Bluetooth Name: V8 Charging Voltage: Micro USB 5V / 0.5-1AH Working Current: 10 - 20mA Bluetooth Working Range: 10 - 15M Output Power: 2 x 18 mW Battery: 3.7 V / 400MAH(Polymer Rechargeable Battery) MIC: 4015 45 DB + 3 DB Features Fashion sports style, retractable and foldable, lightweigh, easy to carry Support last number redial. Easy control for music and calls Dual mode, you can select headphone mode or speaker mode Brand No Brand SKU OT776EL01GWECNAFAMZ-289027 connector_1 3.5MM Compatible Devices Not Specified Wearing type Neckband wireless_connectivity Bluetooth