Features:
Adopting BT 5.0 technology, it brings you high speed of data transmission, stable connection and low power consumption.
With a USB port, the 3000mAh charging case with digital power display can also charge for your smartphones, tablet PC, and other USB-powered devices.
Multi-functional button control let you answer/reject calls, play/pause/switch songs, simply by pressing the button all without taking your smart phones out of your pocket.
Auto power on and fast pairing between left and right earbuds once taking out of the charging case. Easy and quick to pair with BT-enabled audio devices.
Built-in 50mAh battery in each earbud, can be charged automatically in the 3000mAh charging case, supporting about 3-4 hours of music playing time and 4-7 talking time when fully charged.

Specification:
Model Number: Xi10S
BT Version: V5.0
Transmission Distance: 10m/ 33ft (no obstacle)
Frequency Response Range: 20Hz-20KHz
Impedance: 32O
SNR: 92dB
Battery: Earphone: 3.7V 50mAh; Charging Box: 3.7V 3000mAh
Charging Time: about 1 hour
Working Time: about 4 hours
Standby Time: 10-15 days
Color: Black, White (Optional)
Item Weight: approx. 101g (92g of the charging box, 8g of the earphones)
Package Size: approx. 10 * 8 * 3.5cm / 3.9 * 3.1 * 1.4in
Package Weight: approx. 149g / 5.3oz

Package List:
1 * Pair of Earphone with Charging Box
1 * Pairs of Earcaps
1 * USB Cable
1 * User Manual (English & Chinese)