S3 Features:

• HiFi high frequency technology, 6mm moving coil speaker unit.
• Binaural separation design, can be used in both ears or in one ear.
• After the first Bluetooth is successfully paired, the second time you take it
  out, you can automatically pair and connect the phone.
• IPX6 Waterproof, not afraid of sweat and rain.

Specification:

1. Model: S3 TWS Earphone
2. Color: Black, White
3. Wearing Type: In-ear
4. Dimensions: 62*41*32.5mm
5. Microphone: Yes
6. bluetooth Version: V5.0
7. Transmission Distance: 10m
8. Impedance: 32Ω
9. Frequency Response: 20-20kHz
10. Battery Capacity: Charging box: 350mAh, 3.7V
11. Earphone: 50mAh*2, 3.7V
12. Charging Time (h): 1-1.5h
13. Working Time (h): Earphone: 4h
14. Standby Time (h): 150h