The Forerunner 645 Music GPS Watch is a fully-featured activity tracker that's designed to elevate performance, with storage space for up to 500 songs. New for 2018, the 645 features a sleek, sophisticated look with its stainless steel bezel and chemically strengthened glass, yet it's strong enough for serious use while training or racing. Bringing contactless payment to make things even easier while on the go, Garmin Pay removes the need (and worry) of bringing cash or credit cards on the run. With Music functionality, the 645 is compatible with select streaming services or offline playlists, just pair the Forerunner 645 with compatible Bluetooth headphones.
With built-in sport modes and its advanced running dynamics and performance monitoring tools, the Forerunner 645 Music has everything that's needed to refine performance. A wrist-based Elevate heart rate monitor delivers always-on heart rate monitoring to know exactly how your body is fairing after that last run. Afterward, the Forerunner 645 Music will even automatically evaluate the recent exercise history to show whether you're training productively, peaking, or overreaching. Plan and train accordingly with this fully-featured Smartwatch.
- Fully-featured activity tracking watch with GPS and GLONASS is waterproof to 5 atmospheres.
- With the 645 Music, easily download up to 500 song directly from your computer or select streaming services.
- Bluetooth®, ANT+®, and Wi-Fi enabled watch features smart notifications and Smartphone connectivity.
- Garmin Pay makes refueling on a run easier than ever, allowing for contactless payment.
- Wrist-based Garmin Elevate heart rate monitor gives all-day heart rate monitoring.
- Built-in sport modes with support for Running, Cycling, Pool Swimming, Rowing, Elliptical, Cardio, and more.
- Garmin Connect IQ offers free watch faces, apps, and more for customization.
- Battery life: Up to 14 hours in GPS mode, up to 7 days in Smartwatch mode.
- Claimed weight: 41.8 grams.
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Ordered by Most Relevant First
So Far So Good
New York, NY
Upgraded from Garmin 220 which I have had for many years, primarily for music function so would not have to carry my iphone with me on runs. The GPSrunning functionality is great, similar to the 220. There are alot of extra features and measurements, primarily based on HR, which I have not gotten around to figuring out. Physically, the watch is great, smaller and less clunky then the 220 but the face is clear and easy to see. Battery life has been good, ability to locate signal in NYC for GPS is also good. No complaints.
Music The music function is pretty good, not amazing. As you may have read, you need to wear the watch on your right wrist so that the signal does not cut out with the right side receiver on most bluetooth headphones. Setup with Spotify was relatively easy. However, it does take a while to load musicpodcasts via WIFI from Spotify. I found it easier and quicker to download content via Itunes and then sync with the cable from itunesGarmin Express. However, it must be music that your own or have ripped onto your hard drive. Downloaded podcasts are not a problem. So I have to plan ahead and spend a minute or two downloading content to the watch before my run. Navigating through the menus to listen to music is also a little clunky and requires a lot of button pushes but it works. So i am generally happy, would give an A to the runningGPS functions and a BB to the music. I ran a marathon recently and brought along my phone and wired headphones rather than having to load 4 hours of content on the watch and worry about bluetooth headphonebattery issues.
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