Heliograph Signal Mirror with Whistle Emergency Survival Tool

description":"This is a good emergency tool for you. Features: Safety and survival aid products for inshore and offshore use. Combination of two essential survival items: signaling mirror and whistle. The signal mirror is made of lightweight acrylic. Breakaway lanyard attached. Find an objective and let the sun ray pass through the heliograph toward objective and you are signaling. Specifications: Material: Acrylic & ABS Item size: 5.6 * 5.6 * 0.6cm / 2.2 * 2.2 * 0.2in Package weight: 35g / 1.23oz Package size: 8 * 7 * 1cm / 3.1 * 2.8 * 0.4in Package List: 1 * Signal Mirror with Whistle