Main Features:- Automatically receive mobile calls within 10 meters Bluetooth distance
- DSP noise reduction technology ensures high quality audio output
- Large capacity of inbuilt polymer lithium battery， up to 7 hours talk time
- Compatible with most Bluetooth portable devices
- Exclusive design for motor helmet

Bluetooth: V2.1
Battery: 300mAh polymer lithium battery
Standby: 240h
Talk time: 7h
Charge time: 3h Package weight: 0.099 kg
Product Size(L x W x H): 35.20 x 4.50 x 1.20 cm / 13.86 x 1.77 x 0.47 inches
Package Size(L x W x H): 28.50 x 8.50 x 2.00 cm / 11.22 x 3.35 x 0.79 inches Package Contents: 1 x V1 - 1 Bluetooth Headset with Microphone， 1 x USB Charge Cable