Mountain Equipment Company

Garmin Forerunner 45


Colour: Black

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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.


The Forerunner 45 personalizes how you train. Learn how your body responds to: exercise, rest and sleep. The Elevate optical heart rate monitor takes your pulse straight off your wrist, no need for a chest strap. Running metrics like speed and distance are handled by the onboard GPS and internal accelerometers. These sensors turn your movement into data, making sure you get credit for all you do, in the gym and trails. Paired with your phone via Garmin Connect, you can review activities, receive notifications, download training plans, keep an eye on the weather, and control phone apps; like music players. Not just an app, Garmin Connect’s online community lets you join challenges, share milestones and get encouragement.

  • Built-in activity modes for biking (outdoor), running (outdoor) and walking, with more activities unlockable through free the Connect app, like elliptical training, biking (indoor), running (indoor) stair stepping, yoga and more
  • 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
  • V3 low-profile Elevate™ optical heart rate monitor provides reliable constant heart rate data and allows you to train without a chest strap
  • Broadcast of your HR over ANT+
  • VO2 max data lets you see how efficiently your body uses oxygen
  • Incident detection: in case of accident, the unit sends a signal through your phone to your emergency contacts
  • Assistance mode sends out a predefined message (through your phone), to you emergency contacts so they can keep an eye on you
  • Body Battery™ mode monitors what drains your energy (exercise) and recharges your energy (rest, food, etc.), you get a better idea of how, and when to train
  • Garmin Coach provides free, personalized training plans through Garmin Connect
  • Stress level score monitors heart rate variability while inactive to produce a stress score, and helps guide you to reduce stress
  • Move bar reminds you to move after being stationary for too long
  • On board sleep tracking mode monitors total sleep hours and restful sleep
  • 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 (not power meters or Varia lights)
  • Connect IQ support allows you to download custom watch faces
  • Intuitive 5-button interface works with and without gloves and in all weather conditions
  • 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
  • Battery lasts up to 13 hours in GPS mode or up to 7 days in watch mode
  • Fits wrists of 129-197mm
  • In the box: Forerunner 45, charging cable and documentation

Tech specs

Weight36g (Black)
Ideal for
  • Running, fitness and training
  • Cycling
  • Casual wear
Wrist strap materialSilicone
Mineral crystal glass
Dimensions4.2 x 1.2cm
Countdown timerYes
Data cardNot accepted
Touch screenNo
Interval trainingYes
BatteriesLithium-ion (included)
Distance/time alarmYes
Battery life13-168 h
Wireless syncYes
Metric/imperial units formatYes
  • USB
  • Wireless
Button lockYes
12/24 hour formatYes
Battery power indicatorYes
Low battery warningYes
Case diameter42mm
Sold separately
Workout historyYes
Replaceable wrist strapYes
Not compatible
Tide tablesNo
  • Garmin Connect
Sold separately
Chest strapSold separately
Area calculationNo
Heart rate monitorYes
Haptic feedbackYes
Made inTaiwan

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4 out of 5 stars with 330 reviews for Garmin Forerunner 45

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