The GlowSaver is just as the name implies. This protective case will keep your Garmin Astro 320 clean while keeping dirt/grime out of the buttons and the case will glow for several hours in the dark. Introduction to any light source will charge the glow in the dark material. Features a dirt resistant coating to help with the continuous use of dirty hands or gloves. Besides the high quality case provided we also include 2 screen protectors for your Astro 320. These cases can be used in conjunction with our nylon pouch or dash mount that is sold separately. Keep your Astro 320 clean and protected with the peace of mind of having a glow in the dark case. This is cheap insurance to help find your most used equipment in the woods while hunting. Available in orange, green, blue and pink.