... port usb hub,4 port USB HUB with pen holder clockcalendar,blue LED backlight,music alarm,snooze,temperature,countdown timerFunctions:1.Pen holder clock with blue LED back light ... of snooze/alarm clock,countdown timer,music apppreciation 5.With 4-port USB HUB 6.China Patent:2010301144065Power supply: 3*AAAproduce size: 6.4* ...