Chipset:JL6976D4
Speaker：10MM
Earbud battery：30mAh
Case battery：300mAh
Working time：4h
Waterproof level：IPX5
Size of Charging Case: 49*49*20mm
Size of Earbuds: 34*20*16mm
Weight Of Earphones: 2.7g/64g

Features
The size is extremely compact.
Zinc alloy shell + precision CNC process.
The headphone uses transparent back plate
Invisible rotating shaft is my patent, , which makes the appearance more beautiful and unified.