... ) . 4.USB key function . High quality usb mp3 module with two-color LCM display Product Description: *Two-color LCM display *Built-in polymer Lithium battery ... ,silver,blue,pink,red 4 Built-in good quality Li-ion battery .5.with LCD screen. 6.Built-in memory:1GB-8GB ... . 7. Music player function, support format:MP3,WMA,WAV.8 Built in good quality ...