Product Specification:

 

Output power: RMS 3W x 1
Frequency : 150HZ-18KHZ
Speaker Specifications : Φ40mmx1/4Ω
Signal to Noise Ratio : ≥ 80db

Body Size : 127 * 65 * 40MM
Power Supply: ~ 5V-USB 3.5 stereo head
Lithium Battery : 3.7V 1000mA  Material: Plastic

Function: External battery, SD card, USB, FM, audio input, LED display 

Built-in digital audio decoding, beautiful pure sound, audio narration, PC, MP3, MP4, mobile phone the best of a brand new mini - speakers, clear treble, bass, pure ; unique design, quality performance better