1.5" keychain digital photo frame,with steel back,patent products,favorite as promotion,festival,ads gift,digital ... three buttons 5.Play mode: manual or automatic play 6.With Time and calendar functions 7.Rechargeable Lithium battery8.Power supply ... .0 11.Operation system: win 2000 / XP 12.Material: plastic+stainless steel back 13.Accessories: USB cable, key buckle, instruction manual, white ...