1. Bluetooth version: v5.0 + EDR
2. Material: Aluminum Alloy + Waterproof PC V1 + TPE
3. Talk/music time: about 8.5 hours (70% volume) static standby time: about 2/month
4. Battery capacity: 105mAh
5. Bluetooth effective distance: about 10 meters.
6. Horn diameter: 10mm
6. Speaker Sensitivity: 98 +/- 3DB
7. Speaker impedance: 16 ohms +/- 15%
8. Speaker frequency response range: 20Hz-20KHZ
9. Microphone sensitivity: -42 +/- 3db
10. Microphone frequency response range: 100HZ-8000KHZ