Features: it can be connected to the MP3 input and output jacks as mono speaker -- a variety of simulating real turntables sound. Scratchy screams， such as ten kinds of speech sound and you can use the USB finger on the use of direct charging， compatible with USB interface of any type of personal computer have. No effect of mono speaker sound + it is compatible with iPod as 3.5 mm Headset I can touch rotary turntable control plug sound， the built-in loudspeaker and the output end can be connected to MP3 when， in imitation of disc shape design， but that can create effects DJ! Mobile phone chain and light design， easy to carry， can play whenever and wherever possible! Turntables mobile phone chain too overbearing! High said as a mobile phone chain / key chain he has music monster quality - external sound box! But it's amazing function is that it can manufacture DJ playing disc in the speaker and the cool effect.