Product Review

Features:
Unique around-the-neck design that's lightweight and comfortable for all-day use
Exceptional audio with noise suppression and echo cancellation
Convenient power slide switch
Intuitive talk and music controls
Up to 10 hours of talk time

Specification:
The battery time: 15 hours / 540 hours standby
Music Time: about 10H
Transmit power: Class 2
Transmission range: about 10M
Bluetooth version: 4.0+CSR
Running, walking, cycling, sports, and outdoor enthusiasts:
Put the phone in pocket or backpack, easy to enjoy your music and calls.