Bluetooth Version :V5.0 
Bluetooth chip:Airoha
-Chipset: Realtek  Waterproof IPX 7 
-Charging case capacity: 2000 mah 
-Battery capacity: 50 mah per earbud 
-Working Range:10 meters 
-Standby time:240 hours 
-Music Play time: About 6-7 hours 

-Charging Time : 1 hour

CAN DO WIRELESS CHARGING.