1.BLuetooth version: 5.0
2. Chip module:BES2300
3. trumpet:Ø9mm,32Ω
4. Operating range: 10 meters
5.Charge case battery capacity: 450mAh
6.Earphone battery: 70mAh
7. NC level :25db
8. Accessories:packaging box+charge cable+manual
9. Logo:OEM
10. USB charging:DC 5V