Visible over 10 miles! Target planes, helicopters, and distant search and rescue teams with the Rescue Flash Signal Mirror. The 3M reflective aiming aid enables you to signal targets from miles away, and the lightweight Lexan construction will not break if dropped. Be Seen! Ultra-bright signal is visible from up to 30 miles (50 km). One-handed operation the 3M reflective aimer enables you to aim the mirror's reflection using one hand. With this flash signal mirror at hand, it'll be easy to get spotted. Simply hold the mirror at the edges, aim at your target using the aiming hole, and turn and tilt the mirror. It is the life-saving tool that just cannot be left behind. Go ahead and buy this SOL Rescue Flash Signal Mirror to take on your next outdoor adventure. Mirror measures 3 x 2 (7.6 x 5.1 cm) and weighs 0.6 oz. (17 g).