Top 18 best fitness watch for triathletes that you can't miss

Rugged GPS watch built to withstand the toughest environments.Supported Application:Phone. . Wireless comm standard:Bluetooth

Constructed to U.S. Military standard 810G for thermal, shock and water resistance (rated to 100 meters)

Built in 3 axis compass and barometric altimeter, plus multiple global navigation satellite systems (GPS, Glonass and Galileo) support helps track in more challenging environments than GPS alone

Monitor your estimated heart rate, activity and stress; Train with preloaded activity profiles. Strap material: Silicone

Stay connected with smart notifications (with a compatible smartphone) and automatic data uploads to the Garmin connect online fitness community

Use the trackback feature to navigate the same route back to your starting point; Use the Garmin explore website and app to plan your trips in advance

Battery life: Up to 14 days in smartwatch mode, up to 16 hours in GPS mode, up to 40 hours in Ultratrac battery saver mode

Built with an always-on, full-color display that’s light on the wrist and easy to read even in direct sunlight

Battery life: up to 20 days of battery life in smartwatch mode for a full picture of your health — from sleep to training (assuming all-day wear with 3 hours per day outside in 50,000 lux conditions); up to 42 hours in GPS mode and up to 49 hours with solar charging (assuming continuous use for entire period in 50,000 lux conditions); up to 110 hours in UltraTrac mode with solar charging (assuming use in 50,000 lux conditions)

Click or swipe through maps and stats with traditional button controls or a new, responsive touchscreen

Whether you’re running on city streets or riding densely covered trails, Forerunner 955 provides full-color, built-in mapping to keep you on track

Access multiple global navigation satellite systems, and get access to multiple frequencies sent by navigation satellites for improved accuracy in areas where GNSS signals are reflected, weak or typically don't penetrate — giving you superior accuracy for how far and how fast you’ve run — even in challenging environments

From the moment you wake up, get a training readiness score based on your sleep quality, recovery, training and more, so you can determine whether it’s a good day to go hard — or take it easy

Get ready for your next race with race widget — which provides training tips, personalized daily suggested workouts and completion time predictions based on course details, weather and performance

Using new indicators such as HRV status, your recent exercise history and performance, get an easy insight into your overall effort with training status — and know whether you’re training productively, peaking or strained

Receive an overview of your sleep, recovery and training outlook as soon as you wake up with morning report — alongside HRV status, training readiness and weather; you can even customize your report to show what you want to see (This device is intended to give an estimate of your activity and metrics)

With HRV status, gain a deeper understanding of your overall health, recovery and training performance through heart rate variability while you sleep, based on technology developed by our Firstbeat Analytics team (This device is intended to give an estimate of your activity and metrics)

GPS running smartwatch with music advanced training features, Lens Material:Corning Gorilla Glass 3, Bezel Material: fiber-reinforced polymer, Strap material:silicone

Battery life: up to 7 days in smartwatch mode and 6 hours in GPS mode with music

Evaluates your current training status to indicate if you’re undertraining or overdoing it; Offers additional performance monitoring features

Get free adaptive training plans from Garmin coach, or create your own custom workouts on our Garmin connect online fitness community

Provides advanced running dynamics, including ground contact time balance, stride length, vertical ratio and more (When used with Running Dynamics Pod or HRM Run or HRM Tri monitors (sold separately))

Safety and tracking features include incident detection (during select activities) which sends your real-time location to emergency contacts through your paired compatible smartphone

Sync with music streaming services, such as Spotify, to easily store and play your favorite songs right from your watch

Use amazon Alexa built in to get quick news and information, check the weather, set timers and alarms, control your smart home devices and more all through the sound of your voice (third party app may be required; amazon Alexa not available in all countries)

Based on your heart rate, time asleep and restlessness, sleep score helps you better understand your sleep quality each night. Also track your time in light, deep and REM sleep stages and get personal insights

Get a 90-day free trial of the Fitbit Premium to help you stay active, sleep well and manage stress. Unlock it all in the Fitbit app. (The valid payment method required. Cancel before free trial ends to avoid subscription fees. Offer valid for new Premium users only)

With a larger display and an always on option, your information?s always a quick glance away (always on display requires more frequent charging)

Play your favorite songs and playlists with Spotify app controls on your wrist. Also make secure purchases with Fitbit Pay and get called, text and smartphone app notifications.

Inspire 3 is the tracker that helps you find your energy, do what you love and feel your best. All you have to do is wear it

Move more: Daily Readiness Score(1), Active Zone Minutes, all-day activity tracking and 24/7 heart rate, 20+ exercise modes, automatic exercise tracking and reminders to move

Stress less: always-on wellness tracking, daily Stress Management Score, mindfulness sessions, relax breathing sessions, irregular heart rhythm notifications(2), SpO2(3), menstrual health tracking, resting heart rate and high/low heart rate notifications

Sleep better:  automatic sleep tracking, personalized Sleep Profile(1), daily detailed Sleep Score, smart wake vibrating alarm, sleep mode

Comfortably connected day and night: calls, texts & smartphone app notifications(4), color touchscreen with customizable clock faces, super lightweight and water resistant to 50 meters, up to 10 day battery life(5)

Includes a 6-month Premium membership complete with personalized insights, advanced analytics, guided programs and more (New & returning Premium users only. Must activate trial within 60-days of device activation. Content and features may change)

Optimize your workouts with a Daily Readiness Score that reveals if you’re ready to exercise or should focus on recover (requires Fitbit Premium membership. Premium content recommendations are not available in all locales and may be in English only)

Earn active zone minutes as you progress toward your weekly 150 minutes of heart-pumping activity and use 20+ exercise modes to track goals like distance, calories burned and more

Track all-day activity: your steps, distance, hourly activity and calories burned

Use 24/7 heart rate to track resting heart rate better measure calorie burn

Enjoy 10 days of battery life for daily progress without constant charging varies with use and other factors

Track your time in light, deep and REM sleep, then get a Sleep Score to better understand your sleep quality each night

Stay inspired from the shower to the pool with this swimproof tracker (water resistant to 50 meters) and motivated by connecting with friends, competing in challenges, earning badges and celebrating goal milestones

Get call, text, calendar and smartphone app notifications right on your wrist. Notifications and app alerts are available on-device when your phone is nearby

Includes a 1-year Premium membership (New and returning Premium members only. Must activate trial within 60-days of device activation. Cancel before end of trial to avoid recurring fees. Content and features may change. Terms & Conditions apply)

Choose a 1-year or monthly Fitbit Premium subscription to start after trial ends for $9.99 monthly or $79.99 yearly

Keeps track of your energy levels, Pulse Ox (this is not a medical device and is not intended for use in the diagnosis or monitoring of any medical condition), respiration, menstrual cycle, stress, sleep, estimated heart, hydration and more

Easily download songs to your watch, including playlists from Spotify, Amazon music or Deezer (may require a premium subscription with a third party music provider), and connect with headphones (sold separately) for phone free listening

Record all the ways to move with more than 20 preloaded GPS and indoor sports apps, including yoga, running, swimming and more

Get easy to follow, animated workouts right on your watch screen, including cardio, strength, yoga and Pilates

Battery life: Up to 8 days in smartwatch mode; Up to 6 hours in GPS and music mode

Personalize your watch with thousands of free watch faces, apps and widgets from our Connect IQ store

Safety and tracking features include incident detection (during select activities) and assistance (when paired with a compatible device), which both send your real time location to emergency contacts

Stay connected with smart notifications (when paired with a compatible device) for incoming calls, text messages, calendar reminders and more

Garmin Coach provides free 5K, 10K and half marathon training plans that guide you to reach your race goal and adjust based on your performance in the plan

Easy-to use GPS running watch tracks how far, how fast and where you run.Special Feature:Bluetooth.Water Resistant: Yes

Estimates heart rate at the wrist, all day and night, using Garmin elevate wrist heart rate technology

Connected features: Smart notifications, automatic uploads to Garmin Connect, live tracking and music controls (when paired with a compatible smartphone)

All-day activity tracking estimates steps, calories and intensity minutes and reminds you when to move

Automatically uploads your data to Garmin Connect, our free online fitness community where you can join challenges, receive insights and share your progress as you meet your goals

【TOUGHNESS FROM THE INSIDE OUT】The Amazfit T-Rex Pro comes with a 1.3" HD AMOLED always-on color screen; The outer bezel undergoes a metal-spraying process, which enhances the rich textures of the light 60g watch body. Having passed 15 military-grade tests1, this smart watch can battle with you through hot deserts, humid rainforest and polar glaciers. Witness endurance that braves the elements with ease..Supported Application:Alarm,Calendar,Calorie Tracker,Heart Rate Monitor,Distance Tracking. Connectivity technology:GPS. Wireless comm standard:Bluetooth

【YOUR PARTNER IN EXPLORATION】The Amazfit T-Rex Pro smartwatch is high-level exploration partner, supporting four global navigation satellite systems, a blood-oxygen saturation measurement system, a heart rate monitor, a sleep monitor, a weather tracker, a sunrise and sunset monitor, a current moon phase display, a compass and barometric altimeter.

【Ultra-long 18 Day Battery Life】When fully-charged, you can relax and enjoy up to 18 days of activity and progress with typical usage, or up to 9 days with heavy usage, or up to 40 hours with GPS continuous working mode. Go nonstop with T-Rex Pro watch！

【10 ATM WATER RESISTANT】With a 10 ATM grade, the Amazfit T-Rex Pro smartwatch is water-resistant to a depth of up to 100 meters and can accompany you as you surf, swim, or explore the mysterious underwater world together.

【OVER 100 SPORTS MODES】The Amazfit T-Rex Pro fitness watch features over 100 sports modes and can be used to monitor critical data such as workout heart rate, distance traveled, movement speed, and calories burned in real time for most sports modes, to help you track and improve your athletic performance.

【YOUR ULTIMATE PERSONAL ASSISTANT】The Amazfit T-Rex Pro smart watch notifies you of any incoming text messages or calls, scheduled alarms, and events, to prevent you from missing any important information. It can also easily control music playback.

【Sleek and Stylish While Functional】The fitness tracker has a super-sleek 89mm watch body with a 1.69" HD screen assimilating into the bezel-less design. With powerful fitness, and health tracking features, it can help motivate you to meet your workout goals, get to bed earlier and incorporate mindfulness into your daily routine.

【All-round Health Management】This is an ultimate fitness tracker for a healthier, more active life that can provide daily activities tracking, sleep monitoring, and recording female menstrual period.

【20 Workout Modes】This fitness watch offers 20 workout modes to track your every way whenever you are exercising at the gym or home. It encourages regular exercise and keeps you stay motivated.

【Long-lasting With Rapid Recharging】Get an uninterrupted picture of your health with up to 5-7 days in smartwatch mode. About 20 minutes of charging adds up to 1 day of smartwatch mode battery life or 1 hour of music battery life.

【Wide Compatiblity】It is an ideal wearable smart watch for any fitness-focused, health-needed, style-minded, iOS or Android user. It pairs seamlessly with most iOS 10.0 & Android 5.1 or higher version smartphones.