2.8 Inch TFT Color LCD Monitor Cctv Security Camera Video Tester Test Ct-100 DVR with 2400mah High Recharger Li-on Battery High Resolution:480*640 Equip with Lithium battery of high capacity 2400mAh. It can work for a whole day on full charge. Hand-hold design. Portable, you can take it everywhere. a whole day on full charge. Support CCD camera of power source. Max electric Currency 600mA, other CCTV testers only 350mA. It's convenient for user to check camera condition and correct direction of camera, so to make installation and repairing easier.