These high intensity strobelights (5" long x 1" dim) were adapted to make prism and target acquisition easier, increasing productivity, saving hours and money. Even works on long shots with cluttered backgrounds. Rugged polycarbonate construction, weather resistant and lightweight 5 oz. One unit is powered by a single "C" alkaline (included) or rechargeable "C" battery. The NEW SUPER MINI-STROBE uses a special lithium battery (Included). The new Strobe will enable you to see the strobe another 25% further than the mini-strobe. Both will flash for over 24 hours. Custom strobe mount for both strobes, will hold one strobe and will fit standard 5/8x11 threads. Fits on the top of prisms or fiberglass rods via a rod adapter (see Product No. 198 & 200 below).