Is your old GPS training device scared of the water? Well, your new one isn’t.

The rugged forerunner 310XT is your indispensable triathlete training companion. It’s water-resistant to 154 feet (50 meters), and tracks your data in multiple sport modes and sends it all wirelessly to your computer. You’re getting 20 hours of battery life, distance tracking and pace and heart rate¹ monitors on land. And it can go from your wrist to your bike in no time at all.

Dive in
Use your Forerunner 310XT to time your swim in a pool or lake. We know, the GPS signal doesn’t track swimming distance quite as well as land distance. However, a recent software update does give you an accurate estimate of open water swim distance and average swim speed. All you need to do is engage Swim mode and press start as you begin your strokes. When you’re done, just press the lap button to order the Forerunner 310XT to automatically process your time and data to estimate your distance and average speed.

Then go try to beat that speed.

From water to land
So you’re done with your swim. Time hop on the bike. Your Forerunner 310XT is there with you. It moves just as easily from your wrist to your bike as you do from the lake to the road. Its optional quick-release and bike mounts means you’re just a quick glance away from all the biking data you need. The Forerunner 310XT categorizes multisport activities into one workout, and logs transition time so you can examine and analyze your performance.

So much data
Your Forerunner 310XT is going to tell you all you need to know about your performance. It will track your position, even near high buildings or tree cover, with GPS satellite data and record distance, pace, heart rate and power data. And, the Forerunner 310XT connects easily to an optional heart rate monitor, foot pod and cadence sensor.

When you link it to the optional heart rate monitor, the Forerunner 310XT constantly tracks beats per minute and uses heart rate data in advances calorie computation. Maximize your fitness by training in certain heart rate zones. You should note, however, that the Forerunner 310XT does not record heart rates for swimming.

Know your health
The Forerunner 310XT can also track your weight, body fat, body water and six other measurements by linking it with the Tanita BC-1000 body composition scale. The scale readings store to your Forerunner 310XT and then send automatically to Garmin Connect when you’re within range of your computer.

Right to your computer
After your workout, the ANT+ wireless technology automatically transfers data to your computer once your Forerunner 310XT is within range. After that, you can share your data on Garmin Connect or the optional Garmin Training Center software. You can even plan workouts on your computer and have them sent to your Forerunner 310XT.

Specifications

Physical & Performance:
Unit dimensions, WxHxD: 2.1" x 2.2" x 0.8" (5.4 x 5.6 x 1.9 cm)
Display size, WxH: 1.3" x 0.8" (3.3 x 2.0 cm)
Display resolution, WxH: 160 x 100 pixels
Touchscreen: no
Weight: 2.5 oz (72 g)
Battery: rechargeable lithium-ion
Battery life: 20 hours, typical
Water resistant: yes (50m)
GPS-enabled: yes
High-sensitivity receiver: yes

Maps & Memory:
Basemap: no
Ability to add maps: no
Accepts data cards: no
Lap history: 1000 laps
Waypoints/favorites/locations: 100
Routes: 0

Features & Benefits:
Heart rate monitor: yes (optional)
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
Virtual racer™ (compete against other activities): no
Courses (compete against previous activities): 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
Multi-sport (changes sport mode with a press of a button): yes
Advanced workouts (create custom, goal-oriented workouts): yes
Simple workouts (input time, distance and calorie goals): no
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
Vibration alert: (choose between alert tones and/or vibration alert): yes
Interval training (set up exercise and rest intervals): yes
Heart rate-based calorie computation: yes
Training effect (measures impact of an activity on your aerobic fitness): no
Customizable screen(s): yes
Barometric altimeter: no
Unit-to-unit transfer (shares data wirelessly with similar units): no
Power meter compatible (displays power data from compatible 3rd party ANT+™-enabled power meters): yes (records data approx. 1 per second)
Temperature (displays and records temperature while you ride): no
Sport watch: no
Additional: Garmin Connect and Garmin Training Center are compatible with Windows® XP or newer and PowerPC and Intel-based Mac running OS 10.4 or later with Safari.
PRODUCT COMPARISON:

	Forerunner 920XT	fenix 2	Forerunner 910XT	Forerunner 310XT	Forerunner 620	Forerunner 220
Market	multisport	outdoor	multisport	multisport	running	running
Activity Tracking	•
Running metronome	•
Race an Activity	•		•
VIRB control	•	•
Barometric altimeter	•	•	•
Swim metrics	•	•	•
Vector compatible	•	•	•	•
Training Effect	with HRM	with HRM	with HRM		with HRM
Virtual Partner	•	•	•	•	•
Touchscreen					•
V02 max estimate	with HRM	with HRM			with HRM
Cycling V02 max estimate	with HRM and power meter
Recovery advisor	with HRM	with HRM			with HRM
Race predictor	with HRM	with HRM			with HRM
Running dynamics	with HRM-Run	with HRM-Run			with HRM-Run
Bike speed/cadence sensor compatible	•	•	•	•	•
Wireless sync	Bluetooth Smart /WiFi	Bluetooth Smart	via ANTUSB Stick	via ANTUSB Stick	Bluetooth Smart /WiFi	Bluetooth Smart
Advanced workouts	•	•	•	•	•	•
Interval training	•	•	•	•	•	•
Vibration alert	•	•	•	•	•	•
Foot pod compatible	•	•	•	•	•	•
Heart rate-based calorie computation	with HRM	with HRM	with HRM	with HRM	with HRM	with HRM
Heart rate compatible	•	•	•	•	•	•
Auto Lap	•	•	•	•	•	•
Auto Pause	•	•	•	•	•	•
Customizable screens	•	•	•	•	•	•
Garmin Connect	•	•	•	•	•	•
GPS-enabled	•	•	•	•	•	•
Pace alerts	•	•	•	•	•	•
Watch mode	•	•			•	•
Battery life	30 days in watch mode: 24 hrs in training mode	5 wks in watch mode; 16 hrs in training mode	20 hrs in training mode	20 hrs in training mode	6 wks in watch mode; 10 hrs in training mode	6 wks in watch mode; 10 hrs in training mode
Water rating	5 ATM	5 ATM	5 ATM	5 ATM	5 ATM	5 ATM
Weight	2.2 oz (61 g)	3.2 oz (90.6 g)	2.5 oz (72 g)	2.5 oz (72 g)	1.5 oz (43.6 g)	1.4 oz (40.7 g)
Thickness	0.5” (12.7 mm)	0.7” (17 mm)	0.6” (15 mm)	0.8” (19 mm)	0.5” (12.5 mm)	0.5” (12 mm)

Item number: 010-00741-00WO
UPC: 753759086411
Package weight: 0.8 lb

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Product Reviews

Following reviews were written by actual customers.
Every GPS4US customer has a chance to live a feedback after receiving a product.

by Russell S, , 12/26/2016
Looks like new. All new accy''s. Good deal on a great watch

by Regina S, , 12/14/2016
A big display and 20 hours of battery life make this the watch for me. Some of my friends think it is clunky due to its size, but their vision is better than mine.

by MOLINA C, , 8/24/2016
Perfect !!!

by Noah F, , 5/22/2016
It works and arrived quickley

by Ray M, , 4/29/2016
I received the watch at the hotel I was visiting and it arrived on time and on schedule. It works fine just like my original 310XT that is worn out.

by William F, , 4/27/2016
No issues. I am satisfied with the product.

by Bernard G, , 2/15/2016
This is my 2nd of this model. The watch casing where the band connects cracked. I''m satisfied with the product and will be more careful stretching the band as I take it off and on.

by Charles V, , 12/21/2015
The 310XT has some great features to keep track of all the important factors in my runs.

by Stuart M, , 10/1/2015
I''ve used it about 10 times now specifically for long runs. I love the functionality and the battery life!

by Jonathan R, , 6/25/2015
I ordered this watch and it came the next week. I was looking for a watch like this which allowed me to track my average pace. I was pleased with the speed of the shipping and am pleased with the watch. The only downside is that it did not come with the owner''s manual which I don''t need b/c most of it is common sense.

by Gene Q, , 1/16/2015
I absolutely love this device. For me, if it had a built in heart rate monitor it would be perfect. Great value for the money from GPS4US.

by john M, , 8/29/2013
Geest watch. IT possible to train in an more efficient wat.