Firstsing Mini Twins Wireless Bluetooth In-Ear Headphone Stereo Earphone Handsfree for IOS Android

New upgrade ears, fit the human ear contour design, strenuous exercise will not fall off
Easily into the ear, easy to wear, solid and reliable

Vertion : BT V4.1+ EDR
Supports: HSP/HFP/A2DP/AVRCP
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.