GX37：Bluetooth chip: Zhongke Lanxun 5756C
Bluetooth version: 5.4+edr
Bluetooth protocol: HFP, HSP, A2DP, AVRCP
Transmission distance: 10m
Battery capacity (charging compartment): 300MAH
Battery capacity (single earphone): 40MAH
Music playing time: 5-6H
Call time: 5-6H
Charging time: <1H
Charging interface: Type-C
Speaker: 10cm copper ring speaker
Speaker impedance: 32 ohms
Waterproof level: IPX5
Gift box size：15.5*8.5*4cm
Carton size：49*44*43cm
QTY：100pcs/carton
N.W.：12.4KG
G.W.：13.4KG
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