• Bluetooth Version: V5.1
• Plug Type: Type-C
• Working Range: Within 10 meters
• Impedance: 32 Ohm
• Earbud Battery Capacity: 40mAh (Rechargeable Li-ion Battery)
• Charging Case Capacity: 350mAh
• Frequency Response: 20Hz-20KHz
• Music Play/Talk Time: 4 Hours
• Charging Time: 1.5 Hours
• Standby Time: Around 3 Months
• Noise Reduction: -30dB

Reset Instruction:

Put back both the earbuds back into the charging case and close the lid. Reopen and take out them after few seconds.