Brand name： WEX

Specifications：5.0 bluetooth

Size: 17.2*40.4mm

Battery: built-in battery 35mAh, charging case: 400mAh (about 35hours)

Bluetooth distance: about 15meters

Touch contral: 

Play/pause ( touch once either side)

last song  (touch right side twice)

Next song (touch left side twice) 

Call answer/end (touch once on eigther side)

Refuse the call (long touch 2seconds)
Redial (touch twice while no music playing)