The recently launched Oura Ring 5 is smaller and smarter than its predecessor, making it a significant upgrade that I don't doubt most will make, but it's hard to argue with the Ring 4 when its price has hit a record low for Amazon Prime Day. • Browse the full Amazon Prime Day saleYou can now get the Oura Ring 4 at Amazon for $226 (was $399) in the US and for £232 (was £349) in the UK, which is a bargain when you consider that it was the best premium smart ring you can buy just two weeks ago. Today's best Oura Ring 4 dealsAmazon has the best-selling Oura Ring 4 on sale for a new record-low price of $226. Sleek and comfortable, the Oura Ring 4 is fully titanium, making it built to last and highly durable. You get incredibly accurate data and personalized health insights about your sleep and stress levels. Also check out these coupons: 🎟️ Amazon: Claim 30% off Haul orders with this discount code🎟️ Up to 70% off daily deals in the Amazon sale🎟️ Get up to 60% off orders during the Prime Week sale at AmazonView DealOur fitness editor, Matt Evans, is a big fan of the Oura Ring 4. He said it was "nearly the perfect fitness tracker" in our review, praising the design, ease-of-use, long-lasting battery and detailed health information it offers. This fascinating bit of tech is now down to its lowest-ever price on Amazon.Also check out these coupons: 🎟️ Amazon: Claim 30% off Haul orders with this discount code🎟️ Up to 70% off daily deals in the Amazon sale🎟️ Get up to 60% off orders during the Prime Week sale at AmazonView DealMy Oura Ring 5 review is out, but if you don't have time to dig into it, here's the long and short of it: it's a big upgrade over the Ring 4 when it comes to design and performance, but the price jump does hold it back from being an easy recommendation.Costing an extra $50 / £50 / AU$80 than the standard Oura Ring 4 at launch, the Ring 5 is already priced a bit more. That of course is justifiable when you consider the improved accuracy and a 40% reduction in size, which is very noticeable when comparing the two side-by-side. But if you want the same core Oura Ring experience for less, this Ring 4 deal is the one to go for.Against other wearables, the Ring 4 holds its own as a premium wellness tracker. It's not the right choice if you're after a fitness tracker, but for sleep and stress monitoring it's excellent — with an easy-to-use companion app and only one fewer day of battery life than the Ring 5, which is a minor trade-off given it can fully recharge in under an hour.When comparing it to other wearables, the Ring 4 stands out as a luxury item for wellness tracking. It's not the right choice if you're after a fitness tracker, but for sleep and stress monitoring it's ideal. It has an easy to use companion app, and only has one day less of battery life, which is a minor trade-off given it can fully recharge in under an hour.Considering it has most of the same features as the Oura Ring 5, the Ring 4 at this record low price is a genuinely hard deal to pass up, especially when the Ring 5 is unlikely to see a discount anytime soon. If you're new to smart rings and want the best value price for an Oura Ring, the Ring 4 is the deal to buy. More Prime Day deals in the US Amazon Devices: Fire Sticks & Echo from $18Amazon Haul: viral gadgets, tech & appliances from $1.99Apple: MacBooks, AirPods & AirTags from $29Beauty: 50% off toothbrushes & hair toolsCheap TVs: smart TVs from $69.99Garden: tools, mowers, planters from $24.99Headphones: 50% off Beats, Bose & SamsungLaptops: Apple, HP & Dell from $199Mattresses: Sealy, Serta & more from $186Patio: outdoor furniture, rugs & decor from $19.99Sports: 50% off fitness gear, treadmills & clothingVacuums: Dyson, Shark & Bissell from $34More Prime Day deals in the UK Amazon Prime: get a 30-day free trialAmazon Devices: Fire, Ring & Blink from £13.99Amazon Haul: up to 30% offApple: up to 33% off AirPods & Apple WatchAppliances: up to 45% off Ninja & TefalBeauty: up to 60% off Philips & Oral-BEssentials: household goods from £5Fans: from £20Fashion: up to 50% offGaming: £90 off PlayStation 5Headphones: up to 50% off Beats & SonyLaptops: from £149Tablets: Samsung & Lenovo from £79.99Toys: up to 25% off Lego and ToniesTVs: from £129.99Vacuums: up to 40% off Shark & RoborockWearables: up to 30% off Garmin & Oura