Vertion : BT V4.1+ EDR
charging interface: point-contact
battery: rechargeable lithium battery
standby time: about 39 hours charging
Bluetooth V4.1,Binaural headphone, can be used in dual and single.
HD microphone make call clearly and loudly.
Wireless separation of the two fuselage: discard the bundled wire, through the transmission chip in series, two mono headphones sound fusion conversion, to the ears more freedom, shock true wireless stereo enjoy.
Secure Fit and Comfort:ultra size, lightweight less than a coin, in-ear design fitting close and soft with ear canal-no worry about falling out of your ear.