This is a portable high resoluton 3.5" LCD monitor. This unit is great for viewing live video from pro video camcorders such as the GoPro HERO, DSLR and CCTV cameras. It comes with a wristband holder and a bracket to keep the camera upright. The monitor is powered by 4 x AA batteries. It has a 1/4"-20 thread for mounting on any tripod. It is compatible with both PAL and NTSC cameras.