Built in lithium battery lithium battery:3.7V 500mah Rated Power: RMS 2W+2W(Bass) Frequency response: 100HZ-20KHZ

       

Built in lithium battery

lithium battery:3.7V 500mah

Rated Power: RMS 2W+2W(Bass)

Frequency response: 100HZ-20KHZ

Drive unit: 50mm/4Ω

S/N Ratio: 80db

Audio Input:Mini USB jack

Output:3.7V 500mah li-ion battery

Product size: 13.5x6x6.5CM

Weight:345g

Materials:Wooden

SD/MMC ,U disk card reader speaker

play Mp3 format music automatically

Loud speaker