Battery: 7.4V/2200mAh
Charging time: 2.5H~3.5H
Playing time @50% volume: 10H
Playing time @100% volume: 4.3H

Speaker Size: φ52mm
Speaker Power: 4Ω/10W*2
Frequency response: 60HZ-20KHZ
Working Frequency: 2.402~2.480GHz
Input sensitivity: 600mV
THD = 1% Output Power: 4.5W
Total harmonic distortion PO=0.5W ( THD+N ): 0.33%
Audio Format MP3 WAV APE FLAC

Version: 5.0+EDR
Frequency response: 60Hz-20kHz
Protocol specification: A2D, PHFP,HSP
Transmission Distance: Up to 20 meters

Sensitivity: -36 - -40db
Sound Pressure: 110db
SRN: 60db 

Product Size : 206 * 71 * 67mm
Product Weight: 650g

Earbuds material composition: plastic, metal, rubber

Charging case material composition: plastic 

ESC Sounds Mini Speaker
C-Type USB Charging cable
Instruction manual