Output power：RMS 10W
Frequency response：150-10000HZ+1DB
Voltage：DC8.4V Li battery
Dimension：85*105*36mm
Material: ABS plastic

ABS engineering plastics, not afraid of the impact, clear sound, 8 hours of continuous work, battery life can be up to 2-3 years (Li-ion battery), covering 400 square meters, headset microphone