1. Bluetooth version: V5.1
2. Transmission distance: 10 meters
2. Battery capacity: 170mAh
3. Frequency response range: 20Hz-20KHz
4. Charging input: DC5V 170mA
5. Charging time: 1.5 hours
6. Impedance: 16 ohms
7. Aviation grade material, IP67 waterproof and dustproof
8. HiFi sound quality, intelligent noise reduction, 32G memory
9. 10,000 times of reciprocating test of high-strength titanium alloy for the whole machine, arbitrary bending tension
10. Net weight: 32g