The Holosun SCS-PDP-GR Green Solar Charging Sight offers unmatched performance for your Walther PDP. Engineered for reliability, this innovative sight ensures you are always ready for action with its cutting-edge solar charging technology.Designed to attach directly to the slide, the SCS-PDP-GR utilizes multi-directional light sensors to adjust brightness automatically. With a potential 20,000-hour power reserve, say goodbye to battery changes.Direct Mount AttachmentInternal Non Removable BatterySlide Serrations Match Serrations on OpticElevate your shooting experience with the Holosun SCS-PDP-GR.