La description

Specification
●4.1+EDR
●CSR
●RF Transmission power:*0DB
●channel:Class 2
●size：L**0*W**0*H*6MM                                             
●N.W：*7.0g
●Transmission range:*0m
●Talk time: *1.0H**2.0H;  Music time: *0H**1.0H;
●Charging time: 2.5H standby time: **0 H                    
●Function:enjoy the music ;answer and end the phone; refused to call; the last number redial; volume control, etc.
Feature
●Support HiFi Stereo sound for music enjoyment
●Battery capacity display for IOS / Android samrt phone 
●Support call receive function, stereo high definition music, the last number redial
●Can connect 2 mobile phones at the same time
●Voice prompt in English. Voice alert announces connection status
●DPS Noise Reduction technology
●Earplugs with buil-in magnets for simple storage.
●Flexible neckband with very light weight!
●Easy set up with Bluetooth phones
●Designed to comfortably fit either ear
●Noise reduction technology for clear calls
●Hear your music, GPS directions, and more