Features:
Adopting BT 5.0 technology, it brings you high speed of data transmission, stable connection and low power consumption.
Auto power on and fast pairing between left and right earbuds once taking out of the charging case. 
Wireless dual ear design, left and right ear channel separation. You can use the headset solely, or used them in pairs.
Multi-functional button control let you answer/reject calls, play/pause/switch songs, wake up voice assistant, simply by pressing the button all without taking your smart phones out of your pocket.
Ergonomic design fit well to your ear canal and provide you long time wearing comfort.
Built-in 70mAh battery in each earbud, can be charged automatically in the 300mAh charging case, supporting about 6-7 hours working time when fully charged.
Specification:
Model Number: V5
BT Version: V5.0
Transmission Distance: 10m/ 33ft (no obstacle)
Frequency Response Range: 20Hz-20KHz
Impedance: 32Ω
Battery: Earphone: 3.7V 70mAh; Charging Box: 3.7V 300mAh
Charging Time: Headphone: about 1 hour  Charging Case: about 2 hours
Working  Time: about 6-7 hours
Color: Black
Item Weight: approx. 39g (29g of the charging box, 10g of the earphones)
Package Size: approx. 9.7 * 9.7 * 3.2cm / 3.8 * 3.8 * 1.3in
Package Weight: approx. 104g / 3.7oz
Package List:
1 * Pair of Earphone with Charging Box
2 * Pairs of Earcaps
1 * USB Cable
1 * English User Manual