Bluetooth version: V5.3 
Bluetooth chipset: AB5656 
Earplug battery: 30mAh*2 
Case battery: 200mAh 
Bluetooth range: =10m 
Talk time: 4-5 hours 
Playback time: 4-5h (medium volume) 
Charging time: > 1.5 hours 
Color: Green, black, red, dark blue 
Speaker: 13 mm 
Frequency range: 20 H-20 kHz 
Charging port: Type C 
Earbud charging time: 2 times