The heavy duty rubber glow case protects the Garmin Astro 430 handheld from dirt, bumps and drops. The bright orange or green colour adds an element of visibility if the Astro 430 handheld has been dropped in the bush and also glows at night. This cover will glow for a few hours and when it is "charged up" directly under lights it will be ready to glow again. This Astro 430 GPS handheld rubber cover has a side "grip" pattern allowing for better handling of the unit even with gloves. This cover is marked to identify the Astro's operating buttons which keeps the Astro fully functional while in the case.