Model 1 Color Black Type Bluetooth Headset Bluetooth Version v3.0 + EDR Ear Coupling Over the Ear Talk Time 3 Hour Standby Time 70 Hour Operating Range 10 meter Compatibility Bluetooth v2.1 / v2.0 Microphone Yes Radio N/A Supports Music Format N/A Power Supply Built-in Battery Built-in Battery Capacity 150mAh Other Input voltage: DC 5V; Frequency: 2.4GHz; Suitable for Ipad / Iphone; When call comes in it will be vibration; Charging time: 4~5 hours; With flexible wrist band can be a bracelet when no use. Packing List 1 x Bluetooth headset 1 x USB cable (13cm) 1 x English user manual