The Ryobi Tek4 Digital Inspection Scope is designed for the jobsite and is great for plumbing, HVAC work and home repairs. This digital inspection scope features 4 ultra-bright LED Lights for complete image brightness control and a diming control. The inspection scope also features a bright, 2-7/10 in. high-resolution color LCD screen and a voltage indicator that alerts you when it is time to recharge.