A multisport, swim-proof GPS watch, ideal for triathletes & dedicated athletes. Forerunner 310XT has a 20-hour battery life & is water resistant, making it an indispensable training tool. With a high-sensitivity GPS receiver & Hot Fix satellite prediction, Forerunner 310XT locates your position simply, quickly & precisely & maintains its GPS location even in heavy cover & near tall buildings & trees. Track Your Swim The swim-proof Forerunner 310XT is water resistant to a depth of 50 m (164 ft), so you can wear it in the pool, sea or lake to time your swim. With its high-sensitivity GPS receiver & dedicated swim software, 310XT records open water swim distance & average speed. A indispensible training tool for triathletes, this multisport watch records vital metrics for every aspect of the race, from the moment you enter the water to the moment you cross the finish line at the end of the run. & the slim design & flexible wristband mean Forerunner is easy to wear in any conditions. Transition Effortlessly When youre ready to jump out of the water & onto the bike, Forerunner 310XT moves easily from wrist to bike with the optional quick release & bike mounts, making the transition between sports effortless. Forerunner 310XT categorises multisport activities in one workout & also can log transition time in the process, letting you analyse the complete performance from start to finish. Collect Workout Data Forerunner 310XT tracks your position precisely with GPS satellite data & records time, distance, pace, heart rate (optional) & more. High-sensitivity GPS & Hot Fix satellite prediction means it acquires satellites quickly & tracks your movement even near tall buildings or under tree cover. & using innovative ANT+ wireless technology, Forerunner 310XT connects seamlessly to an optional speed/cadence sensor or power meter (ANT+-enabled third-party power meters) to give you advanced cycling data. When paired with an optional wireless heart rate monitor, Forerunner 310XT continuously tracks beats per minute & uses heart rate data in advanced calorie computation. Train in a certain heart rate zone to improve fitness & monitor your level of exertion. You can set pace, speed, distance & heart rate alerts to sound and/or vibrate if you stray from your goal. This is ideal for training in a group, in noisy environments or when wearing headphones. Run, Sync, Store & Share Once youve logged the miles, innovative ANT+ wireless technology automatically transfers data to your computer when Forerunner 310XT is in range. No cables, no hookups. The datas just there, ready for you to analyse, categorise & share in our online community, Garmin Connect. You even can plan workouts on your computer & then send them to your Forerunner. See Where You Are Find, view & go to locations at anytime – British Grid format featured as well as longitude & latitude. It means you wont get lost & is great for adventure racers. Key Features GPS-enabled training device for multisport athletes Tracks time, distance, pace & heart rate on land Times your swim & estimates distance & average speed Water resistant to 50 meters 20-hour battery life Wirelessly transfers data to Garmin Connect for analysis & sharing