Features:
Standard USB can automatically detect your device--dual ports can charge for all devices with USB.
Over-charge, over-voltage, short circuit, over-current, over-heat protection.
3.1A fast charging, 40mAh battery provides long talking time.
Easy operation--Pick up the earphone and it will automatically connect your phone; Put it back to the charger and it will automatically disconnect and be charged.
Provide privacy with this smart Bluetooth earphone. Ergonomic design makes it super comfortable for your ear.

Specification:
Bluetooth Version: 4.1
Support Protocol: HSP, HFP, A2DP, AVRCP
Compatibility: All mobile phone with Bluetooth
Bluetooth Distance: ＜5m
Power Input: DC 12-24V
USB Output: DC5V, 3.1A
Battery: 3.7V, 40MAH
Working Time: About 3H（play music)
Charging Time: About 1 H
Working Temperature: -10~50℃
Size: 8.3 x 3.1cm / 3.27 x 1.22inch
Package Weight: 58g
Quantity: 1pc

Package included:
1 x Car Charger Bluetooth Earphone