3) If you're a runner who needs 10-20 hours of battery life, then the 310XT gives you that. Same goes for competitors in an Ironman needing more than 10 hours of battery life on one watch. Sure you can use accessories to extend that duration, but honestly, that's kinda a pain long-term. The rugged Forerunner 310XT is the triathlete's indispensable training tool--a GPS-enabled, swim-proof trainer that tracks bike and run data and sends it wirelessly to your computer. This multi-sport device has up to 20 hours of battery life, tracks distance, pace and heart rate (optional), and goes from wrist to bike in seconds. The Forerunner 310XT is the triathlete's training tool — a GPS-enabled, swim-proof trainer that tracks bike and run data and sends it wirelessly to your computer. Blog Careers Connect IQ Garmin Connect Garmin Express Garmin Pay Garmin Pros Garmin Technology Shop All Sales Subscription Plans Student Athletes Watch Finder Design Your Own Free next-business-day shipping on qualifying $45 order; Product Details. Home. Item #380017. Garmin Forerunner 310XT Portable Navigator. Item #380017. 1 / 1. $284.99 each. Description. Forerunner 310XT Portable Navigator; Heart rate monitor; USB ANT Stick; AC Charger; Charging Clip; Owner's Manual on Disk; Quick Start guide (*Heart rate data is not recorded for swim activities.) Monitor Your HealthYou also can track weight, body fat, body water and six other measurements when using the Forerunner 310XT with the Tanita BC-1000 body composition scale. The readings are stored on Forerunner 310XT, then automatically sent to Garmin Connect when in range of your computer. The rugged Forerunner 310XT is the triathlete's indispensable training tool - a GPS-enabled, swim-proof trainer that tracks bike and run data and sends it wirelessly to your computer. This multi-sport device has up to 20 hours of battery life, tracks distance, pace and heart rate (optional), and goes from wrist to bike in seconds. Time Your Swim Delivering innovative GPS technology across diverse markets, including aviation, marine, fitness, outdoor recreation, tracking and mobile apps. 2 product ratings - Lot of 2 Garmin Forerunner 310XT & 205 Heart Rate Monitor GPS & Sports Watch. $35.00. 1 bid · Time left 9h 21m left +$6.56 shipping. Ships in a business day with tracking; Learn More Top Rated Plus. or Best Offer +$10.85 shipping. garmin forerunner 310xt User Manual CD And Pamphlet Opens in a new window or tab. Pre GARMIN Forerunner 310XT Wat - for sale, best price - $54.95 - (RUNNING & FITNESS)GPS-enabled sport watchA full-featured GPS-enabled watch designed with the multisport enthusiast in mind. Up to 20-hour battery life. Fully water resistant for pool and open-water training. Customizable data screens and optional mounting hardware to move from wrist to bike, Refurbished, NOH Using the Heart Rate Monitor Note: The heart rate mon tor works w th the Forerunner 305 only. Wear the heart rate monitor directly on your skin, just below your breastplate. It should be snug enough to stay in place during your run. To position the heart rate monitor: 1. Push one tab on the strap through the slot in the heart rate monitor. Review: Suunto's sleek, shiny Ambit GPS watch and its 50 — yes 50 — hours of battery . Basics: Garmin has been in this game a long time, and the company certainly knows what it's doing. Those Review: Suunto's sleek, shiny Ambit GPS watch and its 50 — yes 5