Garmin

Forerunner 645 Music

Garmin Forerunner 645 Music

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Overall

#132 in

Fitness Trackers

according to Reddit Icon Reddit

Sentiment score70% positive
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Top Pros

Top Cons

Last updated: Aug 25, 2026

Reddit Reviews

Reddit Iconblr1g
9 months ago

I've had both, and hands down I would pick MIP all day. I run outdoors in the day. MIP is the best for that. Even at night, the backlight works perfectly fine for me. I'm still using a 645M with a small 41mm display, and even with my not so good eyesight, I have no problems reading the display. The day Garmin goes all in on OLED, is the day I start looking at smart watches instead.

Reddit Iconlittle_buddy82
9 months ago

One of the issues i have with the Amoled display is that I can't seem to be able to use barcode reader to scan barcodes on the watch. With previous forerunner 645M, I had multiple barcode saved on the watch with barcode app. One of them was gym pass, and I had other ones for other specific rewards card. (I hate taking phone out all the time or bringing it sometimes when walking to the gym). Now that I upgraded to an Amoled screen, I can't seem to be able to use barcodes anymore. Not sure if anybody else can comment on this ? Other than that, sometimes the flick of the wrist isn't convenient to look at the time, but you get used to it

Reddit Iconseamusmcnamus
9 months ago

I had the garmin forerunner 645 music for 5 years and it was bullet proof! It has spotify on the watch. You can still pick them up for 200 quid.

9 months ago

Sorry €299 I seen it for, I misread. I have seen them for €200 on sale. https://www.mgaffaires.com/gb/montres-cardiofrequencemetre/1078-montre-forerunner-645645-music-garmin.html?srsltid=AfmBOorQUDF5sHKSW6WxgRCUBEEe1IgKhvBEjDxQLv5YgNy2-hp0dIylbEs

Reddit IconCorbixz
11 months ago

How quickly does it charge? I've gotten used to popping my Garmin (FR645, FR945, Fenix 7s, then Fenix 7s Pro) on the charger for 10min or so while I shower and that is enough that I never have to worry about the battery. Think the same would be true of the Venu 4?

Reddit Icondirtmizer131
8 months ago

I love my 955S. I had the 645 prior and no issues there either.

Reddit IconEmmy_Strange
9 months ago

I had an Apple Watch Series 3 for many years. Then I bought a FR645 to try alongside, just for running. Loved it so much I decided to go full Garmin with a FR745. Loved that watch so much, until I smashed it climbing šŸ¤¦ā€ā™€ļø Decided to upgrade to a Fēnix 7S SS because I wanted maps and I clearly needed the sapphire glass. I’ve had the Fēnix maybe 2.5 years now. Recently, I thought I might prefer an Apple Watch as I am now dealing with chronic illness and have not been able to engage in any of my usual sporting/outdoor activities for 6 months. I lasted 3 weeks with an Apple Watch Series 11 before coming back to my Fēnix. I just prefer the MIP display, the battery and the buttons. I don’t really care for smart features. Also the workout screens and maps but obviously not using those much right now. Sold the Apple Watch yesterday. No regrets.

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