product size: 240*40mm

Material: plastic+metal 

alkaline battery

Charging voltage: DC 5V(TYPE-C)

type: dynamic microphone

Connection mode: 2.4G band

Connection distance: > 10M

Battery life: > 20H

Transmit power: < 20dbm

Distortion: < 1%

Frequency range: 100 Hz-10 kHz