Garmin GPS Forerunner 405 ANT/ HRM


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Long runs, tempo runs, speed drills. You expect a lot from your body‚Ķand from your training gear. Meet the Garmin Forerunner 405 ANT/ HRM. This GPS-enabled sport watch tracks your training, then wirelessly sends your data to your computer. The ultimate in training technology, its sleek design features a touch bezel that lets you quickly scroll and select features on the run. Loaded with serious training features, Forerunner 405 continuously monitors your time, distance, pace, calories and heart rate (when paired with heart rate monitor). Each run is stored in memory so you can review and analyze the data to see how you've improved. You can even download recorded courses to compete against previous workouts or race a Virtual Partner®. Customize Forerunner's data screens for instant feedback while you train. Once you've logged the miles, innovative ANT+™ wireless technology automatically transfers data to your computer when the Forerunner is in range. No cables, no hookups. The data's just there, ready for you to analyze, categorize and share through our online community, Garmin Connect or our optional Garmin Training Center® software. You can wirelessly send workouts from your computer to Forerunner, too. Forerunner 405 is available with or without a heart rate monitor (see the versions tab) to help you make the most out of your training. Versions with a digital heart rate monitor continuously track heart beats per minute. Train in a certain heart rate zone to improve your fitness level or compare your pace and heart rate to past performance on the same run.


  • Heart rate monitor: yes (some versions)
  • Bike speed/cadence sensor: yes (optional)
  • Foot pod: yes (optional)
  • Automatic sync (automatically transfers data to your computer): yes
  • Garmin Connect™ compatible (online community where you analyze, categorize and share data): yes
  • Garmin Training Center® software compatible: yes
  • Virtual Partner® (train against a digital person): yes
  • Courses (compete against previous workouts): yes
  • Auto Pause® (pauses and resumes timer based on speed): yes
  • Auto Lap® (automatically starts a new lap): yes
  • Auto Scroll (cycles through data pages during workout): yes
  • Advanced workouts (create custom, goal-oriented workouts): yes
  • Simple workouts (input time, distance and calorie goals): yes
  • Pace alert (triggers alarm if you vary from preset pace): yes (for advanced workouts only)
  • Time/distance alert (triggers alarm when you reach goal): yes (for advanced workouts only) Interval training (set up exercise and rest intervals): yes
  • Customizable screen(s): yes
  • Unit-to-unit transfer (shares data wirelessly with similar units): yes
  • Additional: Watch functions include dual time, date and alarm
  • Garmin Connect and Garmin Training Center are compatible with Windows® 2000 or later and Intel-based Mac running OS 10.4.11 or later with Safari
  • Lap history: 1000 laps
  • Waypoints/favorites/locations: 100
  • Routes: 0
  • Battery: rechargeable lithium-ion
  • Battery life: 2 weeks in power save mode; 8 hours in training mode
  • Water resistant: yes (IPX7)
  • GPS-enabled: yes
  • High-sensitivity receiver: yes
  • RoHS version available: yes
  • Display size, WxH: 1.06" (2.7 cm) diameter
  • Display resolution, WxH: 124 x 95 pixels
  • Unit dimensions, WxHxD: 1.88" x 2.78" x 0.646" (4.8 x 7.1 x 1.6 cm)
  • Weight: 2.11 oz (60 g)

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Review Summary

4.2 out of 5

5 Reviews

5 Ratings & Reviews

Love my Garmin watch
October 01, 2009

I absolutely love this watch. It tracks your mileage and speed with running and biking. I have been using it for my training. You can plan your workouts ahead of time. Great purchase

Not for Runners who sweat a lot!
May 07, 2010

I bought the Forerunner 405 with HRM just prior to an extended deployment to Iraq. I sweat heavily during my runs and I found the watch would lock up or cycle between screens without any input from me. I have been very disappointed with this watch and think with the price you pay, it should be reasonable to expect water resistance from the watch. It has become an overpriced HRM and not the mileage tracking device I had hoped it would be. I expected more from Garmin!

July 18, 2009

This GPS is extremely easy to use; software for training great. The program offers a number of different ways to monitor your progress (e.g. time, speed, HR, elevation, etc). Satellite connection is strong in wooded areas. Easy to transition between run and bike workouts. Love the ability to construct your own workout. However, I've yet to beat my virtual training partner!

Great for techy, gear-minded runners. Very accurate!
January 05, 2009

This is the Rolls Royce of GPS units for runners and cyclists and is a great value for the price - especially if you commute on your bike or run every day. Garmin finally made a wrist friendly unit for both men and women that actually pauses the time and distance when you get stuck waiting for cars or at cross walks. This is real gear for real athletes

A great way to boost your exercise
June 03, 2010

I have just started running. I love this watch and have been steadily increasing my pace. Auto sync loads your data to your PC automatically. I keep the stic in the USB drive. I have not used it on my road or mt bike yet, but plan to soon. Well worth the investment.

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