We are manufacturer of Watch and Sunglasses equipped with MP3P. Joy glass : You can enjoy music through the inner mp3p while climbing, finishing and playing outside. Also, You can catch important moment by using recording function with outside activity. Joy watch : JoyWatch is good for the teenagers who usually enjoy studying or exercising with listening to music. JoyWatch is good for the business man who listen to music while taking a transportation or studies English. JoyWatch is suitable for the someone who is seeking the healthy life with exercising regularly -Built in memory: 128MB/256MB/512MB/1GB -Playable music format;mp3/WMA/ADPCM Voice recording Portable storage disk(Joy watch: USB 1.1interface) (Joyglass: USB 2.0 interface) SequenceRepeat(Currenttrack/VoiceRecording),Random,Pause,Resuming Equalizer Mode:Pop Rock, Jazz,Classic Delete:Current Track/Voice Recording Power saving:Automatic power off if no button pushed in 2Minutes under pause status battery:R