Features:
Featuring BT5.0 technology, incredible sound quality and authentic sound performance no matter in calls or listening to music.
Providing faster pairing, stable connection and signal transmission.
It will automatically connected when it is taken out after the first successful pairing.
They can also be automatically powered off and charged after putting back into the charging case.
With built-in microphone on both sides earbuds, allows you to make hand-free calls from either one.
Press 2 times to switch songs; 3 times to adjust volume.
Equipped with a charge box, which will automatically charge when the earphones are putted in. 
Ergonomic design, comfortable to wear, not easy to fall.
Compatible with IOS and Android system.
Specifications:
Material: ABS
Color: black; white (optional)
BT type: 5.0
Transmission distance: 10m
Batterys: 1 * 3.7V / 400mAh polymer lithium
Call time: 3-4h
Use time: 30h
Standby time: 220h
Earphone size: 17 * 40 * 19mm / 0.67 * 1.57 * 0.75in
Charge box size: 52 * 45 * 27mm / 2.05 * 1.77 * 1.06in
Package weight: 130g / 4.59ounce
Package size: 150 * 80 * 60mm / 5.91 * 3.15 * 2.36in
Package List:
1 Set * Earphones