1.17 keys, the operation is simple and easy to understand, consistent with current market demand. 2.With Timer OFF and ON function,and can set a specified track sound. 3.Built-in speaker of 20W and 126dB,and support two external speakers,and support 12v power. 4.Built-in flashlight function, night in the outdoor can be used as a lighting. 5.Built-in 1800MA lithium battery, Can continuous play 10 hours. 6.With 110 sounds. 7.size:142*66.5*26.5mm.