Amazon Prime Day 2024: Best deals on health and fitness gear and science kit, almost over

HoMedics TotalClean Deluxe 5-in-1 air purifier: was $212.99, now $127.63 at Walmart

Save over $85 on what we have named the best air purifier overall. The HoMedics TotalClean Deluxe 5-in-1 is now 40% cheaper at Walmart. Brimming with features, nicely designed and compact we found it did a great job trapping airborne pollutants.

Levoit Core 300S-P: was $149.99, now $119.99 at Amazon 

Save $30 on the best-selling air purifier at Amazon. Compact, quiet and smart-enabled, the Levoit Core 300S-P is a great go-to for small- to medium-sized rooms and we love the brand, having tested several of their air purifiers and humidifiers.

Coway Airmega 250: Was $399, now $259 at Amazon

Save 35% this Prime Day on this powerful air purifier. It is one of our favorite appliances ― we rated it at a massive 4.5 out of 5 stars in our Coway Airmega 250 review, praising it for its great air-cleaning performance, ease of use and useful features. It covers up to 930 square feet, and unlike many other air purifiers in this price range, it can remove ultrafine particles and volatile compounds.

Live Science: ★★★★½

Price Check: Target $399.99

Oral-B Genius X Limited: Was $199.99, now $99.99 at Amazon

50% off Our all-time favorite electric toothbrush is now half-price at Amazon. Rated at an impressive 4.5 out of 5 stars in our Oral-B Genius X review, this smart gadget boasts a stylish design, long battery life and plenty of AI-powered smart features to help you improve your brushing technique. The cherry on top? It comes with a spare brush head and a handy travel case.

Live Science: ★★★★½ | TechRadar: ★★★★

Price Check: Walmart $199.99

Philips Sonicare DiamondClean 9000 Special Edition: was $199.96, now $149.96 at Walmart

Save $50 on the special edition of the Philips Sonicare DiamondClean 9000 over at Walmart. This electric toothbrush comes with four brushing modes, three intensities, a pressure sensor and an app to track your brushing progress. We gave it 4.5/5 stars in our DiamondClean 9000 review and named it the best all-rounder in our best electric toothbrushes guide.

Waterpik Complete Care 9.0 Sonic Electric Toothbrush with Water Flosser: was $199.99, now $119.99 at Walmart

Save $80 on this electric toothbrush / water flosser combo set, that's 40% savings and is cheaper than Amazon. It comes with loads of accessories and we gave it four out of five stars in our review due to its three excellent toothbrush modes, sleek and compact design and one-week battery life.

Oral-B iO Series 9: Was $299.99, now $237.49 at Amazon

Save 21% this Prime Day on one of the best electric toothbrushes money can buy. Equipped with advanced AI-powered technology and a pressure sensor, the Oral-B iO Series 9 offers a highly personalized brushing experience and a wealth of premium features. It looks great on the bathroom shelf, too.

Live Science: ★★★★ | T3: ★★★★ | TechRadar: ★★★★½

Price Check: Best Buy $249.99

Philips Sonicare for Kids (Pet edition): Was $42.96, now $27.95 at Amazon

35% off our favorite electric toothbrush for kids at Amazon. We gave it a rare full five stars in our Philips Sonicare for kids review, praising it for its customizable design, fun-filled app, great brushing performance and superb value for money. We also liked that this colorful toothbrush helps you monitor your child’s brushing progress.

Live Science: ★★★★★

Price Check: Best Buy $29.99

Garmin Forerunner 945: was $599.99, now $369 at Walmart

Save $230 on this incredible smartwatch with fantastic battery life and a whole host of features — 14 days of battery life, GPS-enabled, waterproof and comfortable to wear.

Editor's note July 15: This was $279 on July 11 so we're expecting to see this drop again tomorrow.

Samsung Galaxy Watch 6: was $329.99, now $239.99 at Amazon

Save $90 on one of the best-looking smartwatches around. The Samsung Galaxy Watch 6's performance is now even better thanks to a new CPU chip and increased RAM.

Samsung Galaxy Watch 7: was $349.98, now $299.99 at Amazon

Save $50 when you pre-order the Galaxy Watch 7 on Amazon. Superseding the Watch 6, and due to be released next week on July 24 we're confident you'll love this extra 15% discount.

NordicTrack Smart Rower: was $1599, now $978.70 at Amazon

Save over $600 and get 30 days of iFit included with this fantastic rowing machine, including magnetic resistance and a large display.

Merach Q1S: Was $399.99, now $179.99 at Amazon

Save 55% On this magnetic rowing machine. Quieter functioning due to the magnetic flywheel and free courses and programmed exercises with the Merach app make this a bargain. It's discounted by 25% but get an extra $120 off with the coupon.

Editor's note July 15: This was $239.99 on July 11 but only with a $40 coupon so this is now $20 cheaper.

Peloton Bike: Was $1,445, now $1,011 with an invite at Amazon

Save 30% this Prime Day on the bestselling Peloton bike. There is plenty to like about this iconic exercise machine — it is sturdy, sleek and easy to use, and it offers some of the best exercise classes on the market. Mind you, the deal is invite-only, meaning that it is only available to those who first request a unique link from Amazon. However, this massive $334 discount is worth the wait.

Live Science: ★★★★½ | Tom's Guide: ★★★★½ | TechRadar: ★★★★½

Price Check: Peloton $1,445

Sunny Health & Fitness Stationary Indoor Cycling Bike: was $299, now $142.30 at Amazon

Save 52%. This no-frills exercise bike is the perfect pickup for anyone looking to ensure the rubber meets the metaphorical road as quickly as possible.

Echelon Fitness EX-15 Exercise Bike: was $500, now $366.30 at Amazon

Save $133. This exercise bike is sturdy and sweat-proof, with a nifty iPad stand for you to enjoy your TV show or choice.

Beats Studio Buds Plus: was $169.99, now $129.99 at Amazon

Save $40 on these fantastic noise-cancelling earbuds with Spatial Audio and 36 hours of battery life. We haven't reviewed this exact pair but we reviewed the Beats Fit Pro last year and found them to be an excellent AirPods alternative.

Apple MacBook Air M3: was $1099, now $898.99 at Amazon

Save almost $200 on the latest Apple MacBook Air, complete with an M3 chip and lightweight chassis that's perfect for just about any task you throw at it. Get it now as this is a limited-time deal!

MacBook Pro M3 Pro: was $1999, now $1699 at Amazon

Save $300 on the powerful MacBook Pro with the new M3 Pro chip and 14-inch display. This version even has additional RAM.

Unistellar Odyssey: was $2,499.99 now $1799 from Best Buy

Save $700 on the newest and most affordable smart telescope that Unistellar makes. This deal currently beats anything we've seen on Amazon. Fully automated, there's no manual star alignment, slewing, or focusing, everything happens with the press of the screen on your smartphone. Our Managing Editor Jase is currently finishing off his review and thinks it's a solid telescope at a great price. With over 5000 celestial objects, including 37 million stars it's ideal for beginners and veteran astronomers with limited time.

Celestron NexStar 8SE Motorized Telescope: Was $1,599 now $1,399 at Amazon

Save $200 on the best telescope on the market, the Celestron NexStar 8SE is now $1,399 at Amazon. It's GoTo technology, crystal clear optics and user-friendly operation proves time and time again to make it one of the best telescopes on the market.

Editor's note July 16: You have to apply the $200 coupon to activate this deal.

Celestron Inspire 100AZ: Was $359.95, now: $279.64 at Amazon

Save $80 on the beginner-friendly Celestron Inspire 100AZ at Amazon ahead of Prime Day. It's currently the joint-lowest price we've seen since last Prime Day, so it could be reduced even further this year. It's fantastic for beginners looking for sharp views of planets and the moon, and it even has a built-in smartphone adapter for convenient astrophotography.

Space: ★★★★

Price check: Walmart: $308.95 | B&H: $279.64 | Adorama: $279.64

Celestron Advanced VX 8-inch: Was: $1629, now: $1379 at Amazon

Save $250 on the Celestron Advanced VX 8" Newtonian telescope — the 200mm f/5 optical design gives fantastic wide-field views, it's perfect for those getting started with astrophotography and it's lightweight for hassle-free transport to dark sky locations.

Price check: Walmart: $1379 | B&H: $1379 | Adorama: $1379

Celestron StarSense Explorer DX 130AZ: was $479.95 now $399.95 on Amazon.

Save almost $100 once you apply the extra $20 coupon before checkout. Ideal as a beginner telescope, the Alt-Az mount makes it easy to start scanning the stars and, with the StarSense smartphone app and the red-dot finderscope, you'll be spotting the heavens in no time.

Celestron 70mm Travel Scope DX: was $109.95, now $98.19 on Amazon

Save 10% and get started stargazing straight away with a telescope that comes with everything you need and it's also under $100.

Editor's note July 15: There's an additional $15 off coupon taking this telescope down to $83.

Celestron AstroMaster 130EQ was $349.95 now $299 at Amazon. 

Save over $80 and take a step up the telescope ladder with the Celestron AstroMaster 130EQ. Observe Saturn's rings, several of Jupiter's moons and many deep-space objects, all atop the superior equatorial mount. Comes with eyepieces, finderscope, counterweights, tripod and EQ mount.

Editor's note July 15: The $30 coupon at checkout is now available again but we're expecting the price to drop even further on Tuesday 16.

Celestron Nature DX 12x56: was $269.95 now $193.89 at Amazon

Save $76 on a pair of the best binoculars for stargazing, the Celestron Nature DX 12x56 are 28% off at Amazon. Their impressive 12x magnification and 56mm objective lenses are ideal for stargazing and for spotting wildlife.

Editor's note July 16: You'll only get this price when you add the $15 coupon at checkout.

Celestron SkyMaster 25x100: was $499.95 now $409.95 at Amazon. 

Save 18% on some of the best stargazing binoculars you can buy. With huge 100mm objective lenses and a whopping 25x magnification, you'll need a tripod to hold these steady but the stereo night sky views are immense, just ask our expert site Space.com who already reviewed them.

Editor's note July 15: There's a further $30 off when you apply the coupon before checkout.

Vortex Optics Crossfire HD 10x50: was $259.99 now $159.94 on Amazon

Save 42% and take these powerful generalist binoculars with you anywhere thanks to their waterproofing, fogproofing and durability. They come with 50mm objective lenses which make them better than the standard 42mm options for low light scenes.

Occer 12x25 was $35.99 now $25.22 at Amazon. 

Save 30% on these binoculars for kids over at Amazon. The $59.99 price listing was inflated for 24 hours on July 5, but the regular price is around $35-40. We think they're a great compact binocular and gave them 4/5 stars in our Occer 12x25 review.

Editor's note July 15: Was $30.59 but today this has risen to $35.99, but the 30% off coupon makes them more reasonable. We think this will drop as Prime Day starts Tuesday 16.

Celestron SkyMaster Pro 15x70: was $259.95, now $209.95 at Amazon. 

Save 19% on stargazing binoculars that are suited to lunar observing even without a tripod thanks to their powerful 15x magnification and 70mm objective lenses that drink in the low light from the lunar surface.

Editor's note July 15: Price has risen $30 but as Prime Day starts on Tuesday 16 this should drop again.

Nikon Prostaff P3 10x42: Was $149.95, now $96.95 at Amazon

Save $53 on the Nikon Prostaff P3 10x42 binoculars. We gave 4/5 stars to the Prostaff P3 8x42 which are identical except for the magnification change. We were surprised by their optical quality for the price and the 42mm objectives are good for generalist use and birdwatching. Don't forget, they're waterproof and fogproof.

Pococo Galaxy Star Projector: was $125.99 now $79.99 at Amazon

Save $46 on the Pococo Galaxy Star Projector, now $79.99 in this Prime Day star projector deal. We gave it 4/5 stars in our full Pococo Galaxy Star Projector review, and we thought it projected impressive, bright and vivid imagery. It comes in four colors and is rechargeable, so you're not restricted in where you put it in your home.

Canon EOS R5: Was: $3,899, now: $2,899 at Amazon

Save $1000 on one of the best cameras on the market — the Canon EOS R5 is now under $3,000 at various retailers for the first time since Black Friday 2023. Most places are selling it for the same price, although this Adorama deal throws in a 128GB card and a card reader for free.

Price check: Amazon: $2899 | B&H: $2,999 | Best Buy: $2,999. Also £385 off in the UK.

Nikon D850: Was $2996.95, now $2196.95 at Adorama

Save a HUGE $800 on the best DSLR ever made at various retailers ahead of Prime Day. It's incredible for just about any type of photography you could possibly want to do with it — it handles noise fantastically for astro, has excellent autofocus for portraits and wildlife photography and can capture beautiful uncropped 4K video.

It's the same price across most retailers, however, this Adorama deal includes a carry case, a 64GB memory card and a bunch of other accessories.

Live Science: ★★★★½ | Space: ★★★★½ | TechRadar: ★★★★★

Price check: Best Buy: $2196.95 | Walmart: $2104.95 (third party seller) | B&H: $2196.95 |

Sony A7R V: was $3,899 now $3,499 at Adorama

Save $400 on one of the best cameras for wildlife photography on the market right now, with ridiculously detailed 61MP images, insanely accurate AI-powered autofocus and stunning 8K video shooting, plus you get a bag, a spare battery and a 128GB Lexar memory card.

Canon EOS R8 with 24-50mm f/4.5-5.6 lens bundle: was $1,699 now $1,349 at Adorama

Save $350 on the beginner-friendly Canon EOS R8 with the 24-50mm f/4.5-5.6 kit lens in this Prime Day camera deal at Adorama, and they've even thrown in some extras! In this deal, you'll also get a carry case, 64GB card, three filters (UV, polarizer and neutral density) and a cleaning kit. It's the same price at other retailers, but this is the only deal we've found with extras included.

Sony A7 II with 28-70mm f/3.5-5.6 lens: Was $1598, now $998 at B&H

Save $600 on the Sony A7 II mirrorless camera with the 28-70mm kit lens in this B&H Photo deal. It's a fairly old model (almost 10 years old) but it's still worth considering for beginners wanting to take the leap into the full-frame system, with Sony's famously accurate autofocus and 24.3MP sensor producing beautifully sharp and detailed images for just under $1000.

Price check: Best Buy: $1599.99 | Walmart: $1279.95 (out of stock)