Product parameters：
1. Model: RD09
2. Style: In-ear
3. Body Colors: Black/Blue
4. Resistance: 32Ω
5. Bluetooth Version: 5.0
6. Bluetooth Distance: 10m
7. Size: 59*49mm
8. Battery: 300mAh
9. Noise Reduction: CVC 6.0
10. Working Voltage: 3.7V
11. Charging Voltage: DC 5V
12. Talk Time: around 48 hours
13. Listening Time: around 40 hours
14. Standby Time: around 200 hours
15. Waterproof: IPX5
16. Weight: 12g
Package list:
1 * Bluetooth headset 
1 * Charging Cable 
1 * User Manual