Apple Watch Series 3 (38mm): was $279, now $199 @ Walmart
The smaller Series 3 with GPS regularly goes on sale for $199, which isn't the lowest price we've seen for Prime Day. But it's still a solid price for the best fitness-tracking smartwatch for iPhone owners.

Apple Watch Series 4 (40mm): was $399, now $349 @ Amazon
The latest version of Apple's smartwatch is now $50 off if you just want a model with GPS connectivity. Expect bigger savings on the cellular version, though you'll need to buy a separate data plan.

Samsung Galaxy Watch (46mm): was $349, now $299 @ Amazon
One of the top Android smartwatches is now $50 off. Lengthy battery life, excellent fitness-tracking features and a unique rotating bezel make the Galaxy Watch worth buying.

Fitbit Versa Lite: was $160, now $120 @ Amazon
An affordable smartwatch that's great for working out, the Versa Lite can track your activity with 24/7 heart rate monitoring as well as track your sleep. There are 15 exercise modes built in, and you can get app notifications from your phone. 

Fitbit Ionic: was $250, now $170 @ Amazon
The best Fitbit device for runners, the Fitbit Ionic is the only device from the company that offers built-in GPS, so you can easily track your pace, distance and more without your phone. This smartwatch also can store and play 300 songs, and you get up to four days of battery life. 

TicWatch Pro: was $250, now just $175 @ Amazon
The TicWatch Pro boasts a long-lasting battery that doesn’t require charging for 30 days. It offers various tracking features like heart-rate monitor, step counter, calories, speed, and cadence. 

Garmin Vivoactive 3 Music: was $280, now $220 @ Amazon
You can track workouts, store up to 500 songs and pay for transactions without a phone using our favorite smartwatch for fitness.

Garmin Vivoactive 3 GPS: was $280, now $150 @ Amazon
If you prefer to run with your phone for music, the Vivoactive 3 with GPS is a better deal with all the same workout-tracking features as the pricier model.

Garmin Forerunner 235: was $330, now $250 @ Amazon
Garmin's classic running watch offers 9-day battery life and a reflective display you can easily see in bright sunlight. It's not the newest Garmin you can buy, but it's one of the cheapest.

Garmin Approach S20: was $170, now $110 @ Amazon
Golf enthusiasts, rejoice: Garmin's beloved Approach S20 golf watch is deeply discounted for Prime Day. This device analyzes your swings and tracks your activity for a a great price.