... (3.7V,2400mAh) Product Description7" Ebook Reader TTS 4GB 480*800 Pixels +2400Mah Battery 720P Mp4 player digital photo frame *Display ... Type: powered by cPAPER technology*7 inch 480*800 Pixels TFT screen,demonstrates gently, suits long time reading*support ... battery(3.7V,2400mAh) 7" Ebook Reader TTS 4GB 480*800 Pixels +2400Mah Battery 720P Mp4 player digital photo frame