LCD dimension: 1.5 inch screen ?LCD: CSTN ?Picture element: 128 x 128RGB ?Solution: Sitronix ?Internal: 1MB byte flash memory and can store up to 50 pictures ?Picture format: JPEG and BMP ?USB interface: USB 1.1 ?Auto play mode: (preview) ?Picture format: to be converted will cover JPEG, BMP ?Control buttons: 3 keys ?The picture can be deleted by one or all ?Window 98, Me, NT, 2000 and XP ?Charge battery: 3.7V 160mAh (build-in) ?Battery work time: 4-5 hours