1.5 inches LCD screen display full image can reserve 70 pieces of pictures. Super modern design and light weight for quite comfortable to put it on your wrist wherever you go and also can enjoy your photos with you family or your friends. Watch display: Year, Month, Date, Day, Time. Auto power on/off settings. Time and date manual and sync with PC when connected to PC (need driver). Picture auto / manual slide show and slide show time set enabled. Picture format: JPG, BMP, GIF, PNG. Picture size automatically set by software. Input / output picture via Photo View software which contains in the attached CD. Digital Photo Album powered by built-in 3.7V lithium battery. Dimension of this Sports Watch: 47x40x43mm of the watchcase, 265mm in length of the plastic watchband from end to end. Compatible with Win98 SE/ME/2000/XP (Not suitable for Vista OS).