Specifications:                                                                                                                   

Bluetooth Profiles : Handsfree

Bluetooth Version : V2.0/2.1

Transmission Power : Class 2

Transmission Range : 10 Meters

Frequency range: 2.4GHz-2.4835GHz

Talk Time : Up to 4Hours

Standby Time : Up to 100 Hours

Power Supply : Built in Rechargable Li-ion Battery

Operating Current: ≤25mA

Standby current:≤40h A

Charging Time: 3-4 hours

Operating Voltage: 3.6V 

Color:Black