ROCK Space O2 HiFi Bluetooth 5.0 Wireless Headset with Mic, Support TF Card, Space O2

1. Bluetooth version: 5.0
2. Battery capacity: 400mAh
3. Material: ABS+Aluminum Alloy+PU
4. Charging time: about 2 hours
5. Music time: about 15 hours
6. Mic dirctivity: Omnidirectional
7. Weight: 187g
8. Comply with ergonomic design and wear comfortably