Garmin Forerunner 255 Music



Regular colours

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Rocksolid guarantee

Shop with confidence. If it’s not working out, you can return it (consumables, electronics, undergarments and swimwear excluded).
Really. If it's not up to snuff after you use it (a couple times) you can still bring it back. It lasts longer than 30 days, but not forever. We'll be fair about it.


For the first time ever, Garmin’s most accessible full-feature Forerunner is ready to help you train for your first triathlon. Multi-sport mode was previously reserved for the top tier Forerunners, but now the 255 can take you through a swim, bike, and run training session all within a single workout file. Equipped with Garmin’s Elevate optical heart rate monitor, the 255 reads your pulse straight off your wrist, no need for a chest strap. Running metrics like speed and distance information are handled by the onboard GPS and internal accelerometers. These sensors all work together, turning your movement into data, making sure you get credit for all you do, in the gym, the pool and on the trails. The 255 can even give your training a soundtrack, with the ability to connect to multiple music services and storage for up to 500 songs. Having your phone on hand and connected via the free Garmin Connect app, opens a world of smartwatch functionality. Garmin Connect lets you review activities, receive texts, social media alerts, emails, etc., download training plans, keep an eye on the weather and more.

  • Built-in activity modes for biking, running, walking, multisport – transition between activities within a single workout at the press of a button, swimming (indoor and outdoor), gym focused activities (strength training – with rep counter, cardio and elliptical training, stair stepping, indoor rowing and yoga) and more
  • Stream music through a paired smartphone using Spotify, iHeartRadio, Pandora or Deezer. Or, download playlists and podcasts via your favourite music service, e.g. Spotify (premium account required), you can even drag and drop MP3s from your computer – holds up to 500 songs (depending on sound quality)
  • A powerful, internal antenna connects to 3 different satellite constellations, GPS, GLONASS and Galileo. Multiple networks, combined with satellite position caching, give you a fast connection and a strong GPS signal wherever you are
  • Internet Live Tracking during activities (through a connected smartphone) allows you to share your location and heart rate with friends, family, or coaches
  • Race widget helps make race day a little less stressful, providing course specific performance info, weather and more
  • Morning report summarizes sleep quality, recovery level, training effects, and even provides a personalized daily workout suggestion
  • UltraTrac™ mode allows you to stay in the field longer, reducing the GPS recording rate in order to conserve battery
  • Equipped with Garmin’s Elevate™ optical heart rate monitor which provides reliable constant heart rate and pulse ox data
  • Physiological metrics includes VO2 max – which now takes ambient temperature into consideration, an improved race predictor, recovery advisor and performance indicator
  • Heart rate variability (HRV) monitoring is a great tool to predict recovery and how your body is responding to your training
  • Training status uses data from past workouts to learn your fitness level and tell you how effective your training is
  • Acute load compares the intensity of recent workouts against your fitness level and training schedule, keeping you on track to reach your goals
  • Body Battery™ tracks daily energy levels, monitoring what drains your energy (exercise) and recharges your energy (rest, food), letting you train smarter
  • Broadcast of your HR over ANT+ (so other devices can pick it up)
  • Compatible with running dynamics sensors (sold separately) for running power, cadence, ground contact time, stride length, vertical oscillation, vertical ratio and ground contact time
  • Incident detection uses the internal sensors to detect if an accident has occurred. In the case of an accident the unit will send a signal through your paired smartphone to your emergency contacts, letting them know where you are and that you need help
  • Garmin Pay™ contact-less payment; by linking credit cards to your Garmin account, you can make payments with your watch (if supported by your bank)
  • Stress level score monitors heart rate variability while inactive to produce a stress score from 0-100, the lower the score, the lower your stress. When stress levels are high, the 255’s relaxation timer will take you through steps to lower your stress levels
  • 24/7 activity tracking, learning your activity level and guiding you towards a more active lifestyle
  • On board sleep tracking mode monitors your rest, letting you see your total sleep hours as well as periods of movement and restful sleep in Connect
  • Smart notifications (emails, texts, alerts and more) come in via Bluetooth connection to your smartphone
  • Automatically sync your data to a paired smartphone running the free Garmin Connect app
  • Connects with ANT+ and Bluetooth Smart, from foot pods, to speed and cadence pods, to Varia lights, and Rally power meters
  • Connect IQ support allows you to download apps, templates, data fields, watch faces, and other features
  • Always-on, colour display is bright and clear in any conditions
  • Internal memory stores up to 200 hours of activities. Garmin Connect will store all of your activity data
  • User-friendly strap changes, thanks to quick-release pins
  • Rechargeable lithium-ion battery lasts up to 30 hours in GPS mode or up to 14 days in smartwatch mode
  • In the box: Forerunner 255 Music, charging cable and documentation

Tech specs

Weight49g (Black)
49g (Whitestone)
Ideal for
  • Triathlon
  • Running
  • Road cycling
  • Fitness and training
Wrist strap materialSilicone
Mineral crystal glass
Built-in memory4GB
Dimensions4.6 x 1.3cm
Countdown timerYes
Sold separately
Data cardNot accepted
Workout historyYes
Touch screenNo
Replaceable wrist strapYes
Interval trainingYes
BatteriesLithium-ion (included)
Sold separately
Distance/time alarmYes
Battery life6.5-336 h
Wireless syncYes
Tide tablesNo
Metric/imperial units formatYes
  • Garmin Connect
  • Third party apps
Sold separately
  • USB
  • Wireless
Button lockYes
Chest strapSold separately
Area calculationNo
12/24 hour formatYes
Battery power indicatorYes
Lug width22mm
Heart rate monitorYes
Low battery warningYes
Case diameter46mm
Haptic feedbackYes
Product sustainability
  • Rechargeable batteries
Made inTaiwan

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4.469387755102041 out of 5 stars with 49 reviews for Garmin Forerunner 255 Music

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