... format: BMP, JPEG, PNG, GIF. 6. Interface: USB 2.0 7. Photo storage: 80pcs 8. Operation system: ... and Down three buttons 10. Key operation: Power, USB connect, Slide show, Auto off, LCD contrast, Back ... 11. Power: 3.7V lithium rechargeable battery or USB 5V supply. 12. Clock and calendar functions 13 ... Play mode: Manual / automatic play 14. Charger: Support USB port charging 15. Color: Red, White, Black, ...