Bluetooth V5.3  ** Charging case with OVP protection**
Chipset: JL AD6983 
Transmission distance: 10M-15M 
Earbuds battery: 40mAh 
Case battery: 300mAh 
Playtime:6.5 hours
Standby time: 90 days 
Speaker: 13mm/32Ω/
Sensitivity 96dB Composite membrane & Dynamic horn Fully charging time: 1 hour 
Bluetooth distance: 10-15 meters 
Type-C 5V charging