Wireless frequency: 2402Mhz-2480mHz
Transmission power: class 2
Transmission range: 20m
Charge voltage: 5V/ 100A-300MA
Charging time: 3H
Battery capacity: 100MA
Working Voltage: 3.6v-4.2v
Active noise cancellation
For calls and music
Supports TF or SD card
Color: Black