*Certification: CE/ROHS *BT version: 5.4 *Audio decoding: SBC/AAC/LDAC *Earphone battery: 3.7V/40mAh *Case battery:3.7V/400mAh *Playing time: 6.5 hours (Normal volume) *Number of times to recharge earbuds with the case: 4 times *Transmission distance: 15m *Charging Port: TYPE-C *Input:DC 5V 0.5A *Wearing Style: in-ear *Functions: Calling, music playback, ANC (Active Noise Cancelling), ENC (Environmental Noise Cancellation) for calls, hearing aid function, game mode, light ear detection, wireless charging *Product size: 61.5*47.5*24.5mm *Weight: 59g *Package box size: 135*40*135mm