Specifications:

Functions: answer phone, Bluetooth, hi-fi, microphone, noise reduction, song switching, sweat-proof, voice prompts, volume control, waterproof
Material: ABS, metal
Type: in-ear
Connection interface: micro USB
Connectivity: wireless
Drive unit: 6mm nucleation membrane moving coil
Frequency response: 20Hz-20KHz
Sensitivity: 54dB
Bluetooth version: BT5.0
Waterproof rating: IPX7
Bluetooth transmission distance: about 20m/787.40in (in the environment where there is no other disturbing factors)
Frequency: 20HZ-20KHZ
Bluetooth code verison: SBC
Talk time: charging warehouse 6-7 hours
Color: white
Earplug battery capacity: 3.7V60mA*2
Bluetooth protocol: A2DP. AVRCP.HFP.HSP.SPP.PBAP
Battery capacity of the charging compartment: 350 mAh
Charging bin charging time: ≤ 2 hours
Headphone size: about 22.5*22.5*16.8mm/0.89*0.89*0.66in
Charging bin size: about 56*56*28.6mm/2.20*2.20*1.13in
Single ear weight: 4.5g*2
Product weight: about 210g

Packing List:
2 x Earphone
1 x Charging Box
2 x Earbud (large, medium, small)
1 x USB Cable
1 x English and Chinese User Manual