Cheertech solution with rechargeble Lithium batteries bulit inside
1)  Multi function model,photo, music, movie slide show, repeat playback, play background music
     Shows time calendar and alarm
2)   Display: 7 inch, TFT LCD screen display(16:9)
3)   Material: acrylic/ plastic
4)   Picture Resolution: 480 x 234 pixels
5)   Supports SD, MMC  cards,USB disk
6)   Video system: NTSC/PAL
7)  Picture rotation function: 90, 180 and 270°,With zoom in/out function
8)   Supported languages: English, French, German, Italian, Spanish, Portugnese, Dutch and Polish
9)   Easily functioned by remote control or button adjustment
     Adjustable photo display speed and transition interval
10)   Built-in stereo speaker: 2 x 1W
11)   Power supply:  5V DC, 1A (100 to 240V AC-in)
12)   Accessories: Manual,power adapter,AV cable,remote control

Battery technique parameters:
Capacity: 2000mA
Normal Voltage: 7.4V
Maximum charge Voltage: 8.4V
Charging times:  >5000 t
implementation of standards: GB/T18287-2000