Perfect for kayaking, canoeing and sailing!The Foretrex 101 is a wearable Personal Navigator. for the outdoor enthusiast. Built rugged for adventure, this wrist-top device is perfect for hikers, campers, climbers, and mariners who want a useful GPS in a lightweight, waterproof, and affordable package. The Foretrex 101 combines the form factor of our new personal training system, the Forerunner 201, and the GPS navigation features of our popular Geko 201. The Foretrex 101 offers hands-free GPS navigation information, allowing you to concentrate on your outdoor activities. With six dedicated buttons (GoTo, Page, Enter/Mark, Up, Down and Power), the Fore trex is one of the easiest GPS units on the market to operate. It offers the most essential navigation data, enhanced GPS accuracy, and extensive storage for waypoints, reversible routes, and track information. It includes Garmin's exclusive TracBack technology which allows you to mark your campsite, go trekking all day, and then follow the electronic "breadcrumb trail" back to camp in time for dinner. The Foretrex 101 provides 15 hours of battery life using just two AAA batteries. Although the unit dimensions are a bit larger, the Foretrex 101 is lighter than the Foretrex 201, weighing in at just 2.6 ounces (with batteries). Ruggedized for adventure, this wrist-top device is perfect for kayaking, canoeing, sailing, hiking, climbing and those who want a useful GPS in a lightweight, waterproof, and affordable package. It also offers PC compatibility for waypoint, route and track management.