TTnight Outdoor Essentials Surviving Tool - Multifunctional Survival Rescue Signal Mirror for Wild Outing and Water Floating Outdoor surviving tool, floating signal mirror. Dimensions: 125x82x7mm, super portable. Signals are visible from miles away even in hazy weather. Built in precision aiming system. Essential for wild outing and water floating. Built-in with other outdoor essentials, namely flint, compass, whistle, ruler and comparing ruler.