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Garmin

Garmin 010-01863-00 Forerunner 645, GPS Running Watch with Pay Contactless Payments and Wrist-Based Heart Rate, Black, 1.2"

Based on 517 reviews
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$348.85

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At a glance

Condition
New
Style
Standard
Pattern
Watch
Color
Black
Model
010-01863-00
Screen size
1.2 in
Dimensions
1.7 x 0.5 x 1.7 in
In the box
documentationForerunner 645 with Black Colored Bandcharging cable

Features 6

  • Garmin Pay contactless payment solution lets you make convenient payments with your watch (available for supported cards from participating banks) so you can leave your cash and cards at home
  • Provides advanced running dynamics, including ground contact time balance, stride length, vertical ratio and more. Connectivity Bluetooth, ANT+, Wi Fi
  • Uses wrist based heart rate to offer performance monitoring Features, including evaluating your current training status. Display resolution: 240 x 240 pixels
  • Connected features include smart notifications, automatic uploads to Garmin Connect and the ability for others to track your runs with the live track feature

Description

Running is more than just exercise - it’s a performance. Forerunner 645 has the tools to help you put on an outstanding show every time you lace up your shoes. Featuring contactless payments that let you buy what you need while on the go, plus advanced running dynamics and performance monitoring tools, this GPS running watch is the instrument you need to refine your performance.

Specs 24

Special Feature shock-resistant
Connectivity Technology Wi-Fi, Bluetooth, ANT+
Wireless Communication Standard Bluetooth
Battery Cell Composition Lithium Ion
GPS Gps enabled
Shape Round
Screen Size 1.2 Inches
Brand Garmin

Frequently asked questions

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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

Works Very Well, but Choose the Right GPS Mode
I love this watch, and I switched from a Fitbit that I swore by for almost 3 years. After going to Garmin, not only was I amazed by the quality of the watch (the BUTTONS!) but also the fact that it felt solid. It didn't feel like a cheap hunk of plastic, but instead something I felt comfortable wearing with my day-to-day activities, at the gym, out on a hike, run, swim in the ocean (a bit on that in a moment), etc. First month, I purchased my watch back in March, and I was nervous. The watch felt heavier than the Fitbit Versa I was using, and I was getting used to the change in weight on my wrist. The strap is a flexible and stretchy silicone, and is very comfortable. A bit difficult to put on, because it is so flimsy, but there are more important things to worry about than a silly changeable strap (by the way, it's almost month 6 of owning it, and the strap is perfectly intact still). Of course I had to take it on a run and a bike ride to test the battery, GPS, and overall settings. If you're used to a touchscreen watch, this is going to be a bit of a hurdle getting over, because each of the buttons do various things for the watch, and you cannot click on the screen. I appreciate this feature, because now I don't have to worry about damaging the screen and losing touchscreen capabilities or functioning because I bumped it while climbing a rock or scratched it putting on some hiking gear. The buttons are stable, and the standard GPS was great for running and cycling. There are settings to alert you when you've reached a "lap" which can be changed anywhere from 0.1 Miles to upwards of 10 miles (helpful for tracking pace during runs/rides/etc.). When I got back from my first ride (about 42 miles, according to my watch) I was amazed that it tracked so much... Altitude, climb, decent, mileage, average speed, live updates of what I was doing, etc. You name it, and the watch tracked it. After 3 hours of riding, the watch diminished about a quarter of the battery life, which wasn't too bad seeing how I was using the basic GPS the whole time, and all the bells and whistles that come with the watch itself. I tested this on a run, going for my typical 5-10 miles and eventually halfs and 30k+ runs. Same battery life. Fast-Forward to today (I'll keep it short, no need to emphasize anything in a novel-format) 1. Battery: Killer! Still spot on with the average life of the Standard GPS (No I haven't used other GPS features to test their battery life, the standard is accurate enough for me). The Battery lasts about 10-12 hours in GPS mode for me, and I love that. 2. The band is still good for those who care about the standard silicone band that it comes with. Still flexible and showing no signs of wear and tear. 3. Runs, hikes, trail runs, ruck marches, etc. YOU NAME IT, the watch is very accurate* ***NOTE... If you are using the battery saver GPS.... It's terrible. Not going to lie, I tested this several times, and walking, I was going about 7 mins/mile which is insane. I've tried it on numerous occasions, and maybe I just have bad luck, but I was disappointed, because I was looking to track longer, but that's fine! 4. Buttons are GREAT... They push, click, and do the things that buttons typically do, and I've only noticed ONE thing, but it was a non-issue after about a day... I wore it in the ocean! *GASP* I know, wearing a watch in the ocean seems to be the ultimate test, and it was fine. I think that either sand or salt got in the button, but it's completely fine now, and I have not lost any functionality in the watch. Honestly, the only reason I gave it 4-stars was the GPS function and the disappointment that came with that. I feel that if the feature is available, we expect it to be accurate in its tracking capabilities. The GPS was freaking out, sending me in all kinds of directions and definitely not keeping track of the path I was running on. Overall, if that doesn't bother you, get this watch. The price is worth it and the quality is superior to any fitbit I've used. I don't care much for the peripheral features such as sleep tracking, etc., but the watch does great with that as well, using your heart rate for that or what not. Anyway, hope this review helps! PS I'm not bashing Fitbit! I am just comparing to the only product similar that I know of. ... show more
Reviewed in the United States on July 9, 2020 by Zackary
Great runner watch that can go all day (and week)!
Initial (one week in): Great watch! I moved on from a Fitbit Blaze after numerous headaches with connected GPS and quickly deteriorating battery life. I previously owned a Surge and enjoyed GPS on a watch, but that was slow to connect and bulky. So happy to have made the shift from Fitbit to Garmin. My first 6 days: 99% to 34%, with two 30 minute GPS runs using RD pod, multiple gym workouts, and of course first week setup and learning curve. Had on effectively all week including sleep. And went to 100% charge somewhere under 90 minutes, that just happened to be when I checked on it. Pros: Battery life can easily stretch almost a week with plenty of use. Battery percent vice just a bar....which helps one learn howich certain activities use battery. Very helpful. Non-touch screen, which so much better when running. Customizable, particularly with running metrics screen. Holy metrics, if you want lots and lots of data on running, this is the way to go. Always on display, no wait for a screen to wake up. Workouts, challenge to get used to formats, but lots of ones to choose from and option to create your own. Cons: Learning curve for button usage, but worth it. Sleep tracking does not seem as robust as other platforms/products. This one came out before they had the pulse oximeter included. If I were doing more altitude training and/or had a condition such as ashma, then maybe the extra money would have been worth it. Summary, amazing watch for runners, particularly paired with a RD pod. Got mine for a steal on black Friday...$200 vice the normal $400. At $400 one should probably consider the FR245, although I think the metal bezel on the 645 works better as an all day watch. Watch band might be small for someone with large wrists, but otherwise this has been a great watch so far. ... show more
Reviewed in the United States on December 8, 2019 by NAU
Just What You'd Expect From A Garmin Watch
Great watch so far (had it for a month)! It does everything my non-smart Garmin running watch did and much, much more all in a compact piece. I like the buttons on the side vs touch (if you're running with sweaty hands in the summer or have gloves on in the winter, this would be a major pain not to be able to see what's going on during the run). Love that I can wear it days (about five) and not have to charge the battery. Charging is very quick too! Text replies are canned responses, so you only have a set amount to choose from (I assume more could be added later via software update). Decent customization of the watch, allowing you to change the face and choose which features and info in each feature you want. The watch itself is a little large, but compared to previous Garmin watches, it's tiny. The band does not appear as sturdy, but so far it seems to be holding up rather well and it's very comfortable. It is extremely simple to switch bands without a tool (with lots of colors and materials to choose from)! Setup was pretty easy (especially if you previously owned a Garmin). And the heart rate on the wrist seems to work quite well (used to have a HR chest monitor). The best part about this purchase for me is when I want to go out for a run, I literally just GO! No watch changing, no HR monitor!! ... show more
Reviewed in the United States on December 7, 2018 by Kim
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