PREMIUM MATERIAL: Made of high quality aluminium alloy, anti-rust, sturdy, durable, lightweight and portable. ERGONOMIC DESIGN: It can store up to 16 locations with 3-button design and ergonomic shape which offers real time longitude and latitude co-ordinates, route distance and time, traveling speed and altitude, satellite time, practical and concenient to use during outdoor adventures. EASY TO USE: Easy to operate and portable with a key chain, it enables users to return to starting point or preset destination with high sensitive guiding function.