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Turn every run into your best performance yet with Forerunner 645 Music. This watch puts your songs on your wrist so you can leave your phone behind. It even lets you pay for that post-run latte from your wrist.

Brand:Garmin Battery Life:Smartwatch Mode: Up to 7 days, GPS mode with music: Up to 5 hours, GPS mode without music: Up to 14 hours Waterproofing:5 ATM Weight:42.2 grams GPS Recording Functionality:GPS and GLONASS
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Our advantages

12 months warrantyGuarantee for all purchased goods in our online store is 12 months

eMail NotificationsYou receive eMail messages about each stage of your order.

Return & ExchangesYou can return the items purchased within 14 days. The goods must be in brand new condition and have all the factory packaging.

Convenient PaymentsPay orders in convenient ways: bank transfer or by credit card (Visa and MasterCard Accepted).

NZ Based StoreWe are proud to be based in Christchurch, and your order is shipped from here each day via Courier Post

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Garmin Forerunner 645 - GPS Running Watch with Music and More.

GPS Running Watch with Music and Contactless Payments

  • Easily download up to 500 songs to your watch, and connect with Bluetooth® headphones (sold separately) for phone-free listening
  • Syncs music from select streaming services for offline listening¹
  • Garmin Pay™ contactless payment solution² lets you make convenient payments with your watch, so you can leave your cash and cards at home (Coming Soon!)
  • Provides advanced running dynamics³, including ground contact time balance, stride length, vertical ratio and more
  • Uses wrist-based heart rate4 to offer performance monitoring features, including evaluating your current training status
  • Battery life: up to 7 days in smartwatch mode; 5 hours in GPS mode with music, GPS mode without music: Up to 14 hours

Running is more than just exercise — it’s a performance. And Forerunner 645 Music has the tools to help you put on an outstanding show every time you lace up your shoes. It features on-device music storage — so you can run with your favorite tunes — and contactless payments that let you buy what you need without missing a beat. With all those features plus advanced running dynamics and performance monitoring tools, this GPS running watch is the instrument you need to refine the performance.

With up to 500 songs worth of music storage built right into your watch, we’re putting the “beat” in your daily mission to beat yesterday. It’s easy to transfer music from your computer and then queue up your favorite playlist for easy listening through Bluetooth headphones. You can even sync your carefully crafted playlists from select music streaming services¹ to your watch for more ad-free listening. Now you really can leave your phone behind when you head out for a run, because the music that helps keep you moving is right there on your wrist.

Garmin Pay - Forerunner 645

Paying Made Easy

Always on the run? Feel free to leave your phone and wallet behind. Forerunner 645 Music features Garmin Pay contactless payment solution,² which lets you pay for purchases with your watch. Use it just about anywhere you can tap your card to pay. A bottle of water here, a bite to eat there — just pay, and keep on moving.

Tune up Your Training
We’re making it easier to get the data you need to improve your form. Let Forerunner 645 Music measure crucial running metrics³ that you can use to analyze your performance. Biomechanical measurements², such as cadence, stride length, ground contact time and balance, vertical oscillation and vertical ratio, are the key to understanding your form so you can bring your best on race day. These metrics are available with the addition of a compatible heart rate strap or the compact Running Dynamics Pod, which clips right onto your waistband. Also, take advantage of feature sets to help with cycling and even swim training. In the pool, Forerunner 645 Music will track your distance, pace, stroke count and more.

Monitor Your Performance
Just how effective is your current training plan? Forerunner 645 Music will help you monitor your training and recovery so you can better prepare for a race or training cycle. Training status is a performance monitoring tool that automatically evaluates your recent exercise history and performance indicators to let you know if you’re training productively, peaking or overreaching. The anaerobic training effect metric opens a window of insight to a critical dimension of training, telling you how your training is improving your ability to push the limits. You can even view your overall training load, which measures your exercise volume from the last 7 days and compares it to the optimal range for your fitness and recent training history.

More Ways to Customize
Check out the Connect IQ™ store, where you can add personality to Forerunner 645 Music by downloading apps, widgets, watch faces and more. It’s easy and — even better — it’s free. New apps are added every day, so you can keep tabs on when your Uber is arriving, turn on your lights at home with the SmartThings app, and even use the AccuWeather MinuteCast app to find out when the rain will start. With the Face It™ watch face app, choose any image from your photo library, make some tweaks, and set it as your watch’s face.

Stay Connected on the Run
Forerunner 645 Music makes it easy to run without leaving important smart features behind. Once paired with your compatible smartphone, you’ll be able to receive and even respond7 to text messages and see social media updates, emails and more right on your wrist. Find your phone, access music controls, and let friends LiveTrack your runs.

Love the Look
Designed for runners, Forerunner 645 Music features a reliable five-button interface that lets you mark laps with a quick press. Feel free to take this watch outside in all kinds of weather. Not only is it safe for swimming and showering, its Garmin Chroma Display™ is easy to read — even in direct sunlight — and housed under chemically strengthened glass. When you want to change it up, swapping bands is fast and doesn’t require tools. And with up to 7 days of battery life in smartwatch mode and 5 hours in GPS mode with music playback, Forerunner 645 Music is the running partner that can keep up with you.

iHeartRadio All Access — All Your Favorite Music
iHeartRadio All Access makes it easy to take your music with you. Just download playlists to your Forerunner 645 Music, and go! Sign up for a free 30-day trial of iHeartRadio All Access today to take your favorite music offline and listen while you’re on the move.


Thank you fitness New Zealand Ltd for your excellent customer service. My new Garmin Forerunner watch meets expectations and you were very efficient and helpful filling my order!
My first Garmin watch and I'm very happy with my purchase. Loving the Garmin Connect App. Service from Steve was great.. Kept me updated all the way regarding the supply delay (from Garmin) Thanks Team
I upgraded to the 645 music from a TomTom Adventurer and I'm really happy I did. The Garmin is better in every department to the the TomTom so I would definitely recommend it to anyone looking for a running watch with onboard music. The customer service from Steve at Fitness New Zealand is the best I have experienced for ages, it really is A1. I will absolutely be shopping with Fitness New Zealand again and couldn't recommend them more highly.
Great product with a tonne of useful features. Only downside is that, being a brand new product, there are some software glitches that need to be fixed. But that's just a part of adopting new Garmin watches. For example, my watch rebooted twice during a 45 minute run while using on board music. Garmin is aware of this, and will hopefully patch it in the next update. Otherwise, customer service at fitness NZ is great, and I highly recommend them and this product!
Excellent product. Really happy with all the functions and that it plays music. Only slight downside is no touch screen. But once you get the hang of it, no problem. Personal favorites include wrist HR, sleep tracker, running pace, steps, weekly km, and aerobic/anaerobic zones. Great customer service, too. Paid and picked up same day.
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Additional Info


Lens Material chemically strengthened glass
Bezel Material
stainless steel
Strap material silicone
Quick Release Bands
Yes, 20mm
Physical size 42.5 x 42.5 x 13.5 mm
Weight 42.2 g
Water Rating 5 ATM
Display Type sunlight-visible, transflective memory-in-pixel (MIP)
Display Size 1.2" (30.4 mm) diameter
Display Resolution 240 x 240 pixels
Color Display
Battery Life Smartwatch Mode: Up to 7 days
GPS mode with Music: Up to 5 hours
Memory/History 200 hours of activity data


Garmin Elevate™ wrist heart rate monitor
Barometric altimeter

Daily Smart Features

Connectivity Bluetooth®, ANT+®, Wi-Fi®
Connect IQ™ (downloadable watch faces, data fields, widgets and apps)
Smart notifications
Controls smartphone music
Plays and controls watch music
Music Storage
up to 500 songs
Find My Phone
VIRB® remote
Smartphone compatibility
Compatible with Garmin Connect™ Mobile

Heart Rate Features

HR zones
HR alerts
HR calories
Recovery time
HR Broadcast (broadcasts HR data over ANT+™ to paired devices)

Running Features

Preloaded run profiles Running, Treadmill Running, Indoor Track
GPS-based distance, time and pace
Cadence (provides real-time number of steps per minute)
Run workouts
Race predictor
Foot pod capable

Cycling Features

Preloaded cycling profiles
Biking, Indoor Biking
Time/distance alerts (triggers alarm when you reach goal)
Speed and cadence sensor support (with sensor)
yes (ANT+® and Bluetooth® Smart)

Swimming Features

Preloaded swim profiles
Pool Swimming
Pool swim metrics (lengths, distance, pace, stroke count/rate, calories)
Stroke type detection (freestyle, backstroke, breaststroke, butterfly)
Swim efficiency (SWOLF)
Drill logging
Pool swim workouts

Outdoor Recreation Features

Preloaded outdoor recreation profiles
Skiing, Snowboarding, XC Skiing, Stand up Paddleboarding, Rowing
Point-to-point navigation
Bread crumb trail in real time
Back to start
UltraTrac mode
Elevation profile
Distance to destination
Vertical speed
Total ascent/descent
GPS coordinates
Delivery & Returns

Here at Fitness NZ we offer a quick, safe and affordable option for delivering your online purchase to home, office or wherever you choose to get this sent to.

Online Home Delivery
New Zealand Wide Shipping, Courier Post charge starting at $3.95 - through to $7.95 for bulkier/heavier item.

Click & Collect
You are welcome to order online and arrange to collect your order from our Christchurch location at a time that suits you.

Faulty Goods
If a problem occurs with a product purchased from Fitness New Zealand please contact us. We will arrange for it to be repaired or replaced, or provide a refund as specified by the Consumer Guarantees Act.

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