... Lithium battery with 4--8 hours playtime 9. Power supply: built-in 3.7V lithium battery or USB 5V ... supply 10.120s auto shut off 11. Interface: USB ... Air Customize:1, Print Customer's logo on digital photo frame. Printing Method: Color Print, Silk Print, Laser, Press ... , Make the Customer's design to be digital photo frame.3, Preload Customize's Data and make the Data ...