It's Amazon Prime Day, or Big Deal Days as Amazon's taken to calling it, and there are lots of deals on all manner of fitness and wellness kits — but my first port of call was to check the Apple Prime Day deals for any Apple Watch discounts. As luck would have it, there are quite a few in both the US and UK — so now's the time to get yourself a new smartwatch. In the US, the brand new Apple Watch Series 12 just got its first discount. Right now on Amazon US, the GPS-only Apple Watch Series 12 in 42mm is $349.99 (was $399). Meanwhile, the 46mm, GPS-only Apple Watch Series 12 is available on Amazon for $399.99 (was $449). If that's out of your price range, however, I've got an affordable alternative: the Apple Watch SE 3 now starts at just $199.99 on Amazon (was $249) for the 40mm GPS-only model. That's a terrific value pick, and the discount also extends to larger and GPS+Cellular models. You can check out the full deals below, including the GPS+Cellular versions of both watches, which can be added to a phone's data plan. • Browse the full Amazon Prime Day saleIn the UK, you can get the Apple Watch Series 11 starting at £259 (was £319) on Amazon for its smaller 42mm size, and the 46mm is down to £278.02 (was £349), saving you 20%. Those numbers are for the GPS-only models, but the discounts extend across Cellular versions too. The Apple Watch SE 3 is also on sale in the UK, starting at £199.99 (was £249) on Amazon. Check out the deals using the 'UK deals' hotlink or scroll down to see the full list.Apple Watch deals in the USToday's best Apple Watch deals: Quick linksApple Watch Series 12: 42mm (GPS-only): was $399 now $349.99 at AmazonApple Watch Series 12: 46mm (GPS-only): was $449 now $399.99 at AmazonApple Watch SE 3: 40mm (GPS-only): was $249 now $199 at Amazon Watch Series 12 (GPS-only) 42mm: was $399 now $349.99The brand-new Apple Watch Series 12 offers a redesigned Health Sensing System, which means more accurate heart rate readings, a Readiness Score, and more metrics in your Vitals app. Audio Intelligence features like Shazam, Live Rewind and Recaps make your new Apple Watch smarter, too. 42mm GPS+Cellular: was $499 now $449.99 at AmazonView DealWatch Series 12 (GPS-only) 46mm: was $449 now $397.99The larger 46mm Apple Watch Series 12 is great for larger wrists, with its liquid-retina OLED display showing off its Maps complication, Photos watch face, and larger Smart Stack, making it easier to use at a glance than ever.46mm GPS+Cellular: was $549 now $499.99 at AmazonView DealWatch SE 3 (GPS-only) 40mm: was $249 now $199Save 20% / $50 on Apple's cheapest Apple Watch, making it better value than ever. The SE 3 may have the older 18-hour all-day battery life, but it comes with fast charging and most key watchOS 27 features. 44mm GPS-only: was $279 now $229 at AmazonView DealApple Watch deals in the UKToday's best Apple Watch deals: Quick linksApple Watch Series 11: 42mm (GPS-only): was £319 now £259 at AmazonApple Watch Series 11: 46mm (GPS-only): was £349 now £278.02 at AmazonApple Watch SE 3: 40mm (GPS-only): was £219 now £199 at Amazon Watch Series 11 (GPS-only) 42mm: was £319 now £259Last year's Apple Watch Series 11 is by no means long in the tooth: although it lacks the Series 12's redesigned Health Sensing System, it's an excellent, accurate watch in its own right, with the latest model's 24-hour battery life and watchOS 27 smarts.42mm GPS+Cellular: was £419 now £357 at AmazonView DealWatch Series 11 (GPS-only) 46mm: was £349 now £278.02The larger 46mm Apple Watch Series 11 offers a slightly bigger discount, saving you a full 20%. At this price, it's definitely worth buying over a full-price Apple Watch Series 12.46mm GPS+Cellular: now £399 at AmazonView DealWatch SE 3 (GPS-only) 40mm: was £218 now £199Save twenty quid on the SE 3. While there are some cheaper construction elements and older parts used on the watch, it's still the best-value (not just the cheapest) Apple Watch on shelves and a steal at under £200. 44mm GPS-only: was £249 now £229 at AmazonView DealMore Prime Day deals in the USAmazon Devices: Fire Sticks & Echo from $18Amazon Haul: viral gadgets, tech & appliances from $1.36Apple: MacBooks, AirPods & AirTags from $28Cheap TVs: smart TVs from $69.99Headphones: 50% off Beats, Bose & SamsungLaptops: Apple, HP & Dell from $199Mattresses: Sealy, Serta & more from $89Smartwatches: up to 36% off Garmin & AppleVacuums: Dyson, Shark & Bissell from $49More Prime Day deals in the UK Amazon Prime: get a 30-day free trialAmazon Devices: up to 67% off Fire, Ring & BlinkAmazon Haul: extra 15% off for Prime membersAppliances: up to 40% off Ninja & De'LonghiBeauty: up to 60% off Philips & Oral-BEssentials: cleaning & groceries from £2Fashion: up to 50% offGaming: record-low Nintendo Switch 2Headphones: up to 50% off Anker & SonyLaptops: up to £800 off Microsoft & AsusTablets: up to 50% off Fire tabletsTVs: from £129.99Vacuums: up to 50% off Shark & DysonWearables: Samsung & Oura from £31