Garmin GPSMAP 65 Series consists of two models of GPS. The GPSMAP 65 and the GPSMAP 65s. Both offer a rugged, all-terrain GPS navigation unit with a high-sensitivity receiver. Which uses multiband features to utilise multiple satellite networks for quick grid reference with accuracy. The unit is IPX7-rated waterproof. Features a colour screen that can be viewed in sunlight and has an impressive 16GB of memory for data storage. Such as updates, routes, map markers, geocaches, and more. This can be further upgraded with the addition of (at max) 32GB microSD card. The 65s model also provides users with a 3-axis tilt compass for accurate and easy navigation, a must-have in challenging environments. As well as a barometer providing you with current weather conditions and an altimeter which lets you know your current height above sea level. All of these within a comfortable to use, hand-held navigation unit.