Material: UV & ABS
Rated Power: 5W
Input Power: Power Adapter /USB Power Supply / Lithium Battery
Degree of Separation: 80dB
Distortion Degree: 1% (3.7V, 1Khz, 1W)
SNR: 83dB
Working Voltage: 3.7V
Input: 5.0V
Lithium Battery Capacity: 18650 battery(not included)
Impedance: 2Ω
Display Screen: LCD
Working Temperature: -5 ~ 40°

Feature:
Insert a TF card, then it will support recording function and playing the recording files via the dual 3W stereo speakers; the LED display screen shows the information and status of the speaker.
Support MP3 / WAV Lossless Decode.
This product can Continuous work for 72 hours.
This product Single track loudnesss can reach 128dB.

Package include
1 x Mini Audio Speaker
1 x Cable Head Microphone
1 x Belt
1 x Certification of Competency
1 x Power / Data Line
Portable PA Voice Amplifier Headset Microphone