K38

Bluetooth version:bluetooth 5.1
technology. Bluetrum AB5616A
support:HFP1.7,1 HSP,1.2AVRCP,A2DP1.3,AAC
water resistant:IPX4
Speaker size:13mm（dynamic)
Impedance: 32Ω+/-15%
Sensitivity: 100dB±3dB
Battery capacity: 30mAh(Both side).
Battery capacity charge case:300mA.
Battery life: hours:15 hours
Playback time:3~4hours
charging mode:Type-C
charging case have Over voltage and over current protection