... , MP4,DVR, portable DVD, pocket mini projector, PDA, walkie talkie, Illumination lighting, karaoke player ,and other digital products anywhere anytime. Product Specification ... :about 2 hours, depending on the capacity and charging current;11. Temperature and Humidity requirements: The normal condition should be: ... camcorder, mobile phone, MP3, MP4,DVR, portable DVD, pocket mini projector, PDA, walkie