Tws true wireless bluetooth...

Bluetooth protocol: 5.0
Channel: 2
Usage: earplug style
Single or dual ear: bilateral stereo

Waterproof: IPX5 waterproof

CVC8.0 call noise reduction

Bluetooth distance: 10m
Bluetooth frequency band: 2400MHz-2483.5MHz
Speaker impedance: 32Ω
Microphone sensitivity: 38dB
Battery capacity: 300mAh