Amazon Prime Day 2025: With the first-ever four-day Prime event, these are the best early deals on health & fitness gear, optics and STEM toys

Save 15% on the excellent BlueAir Blue Pure 411i Max. This compact air purifier offers great air-cleaning performance and a sleek, user-friendly design. It also comes with an air quality sensor and auto mode, and it has plenty of smart features, too. We named it as the best budget option in our guide to the best air purifiers.

Read our full BlueAir Blue Pure 411i Max review

Featured in: Best air purifiers

Save $50 on this smart-enabled air purifier, which we named as the best overall in our guide to the best air purifiers. With a three-stage HEPA filtration system perfect for removing all kinds of pollutants, and up to 1,588 square feet coverage, the Levoit Core 600S-P is a great choice for large spaces.

Read our full Levoit Core 600S review

Featured in: Best air purifiers, Best air purifiers for allergies

Save 20% on this tabletop air purifier from BlueAir. Sleek, powerful and whisper-quiet, the DustMagnet 5440i is a great go-to for medium- to large-sized rooms and we love the brand, having tested several of their air purifiers.

Save 17% on the smaller version of the Molekule Air Pro, a medically graded air purifier that we named as the best option for large rooms in our guide to the best air purifiers. This compact appliance features patented pollutant-destroying PECO technology and a HEPA filter, and it offers some of the best air quality readings we have seen in a commercial air purifier.

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.

Read our full Oral-B Genius X review

Featured in: Best electric toothbrushes

Save 33%. The Oral-B iO Series are some of the best electric toothbrushes out there, especially when it comes to smart features, brushing performance and AI-powered brushing personalization. They do not get discounted that often, so snap this early Prime Day deal while it lasts.

Save 27% 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.

Read our full Oral-B iO Series 9 review

Featurd in: Best electric toothbrushes

Save 26% on the Bitvae R2, our favorite budget electric toothbrush. We gave this model a strong 4.5/5 rating and included it in our guide to the best electric toothbrushes. The Bitvae R2 comes with a whopping 8 brush heads, five cleaning modes and up to 60 days of battery life. Available in multiple color options.

Read our full Bitvae R2 Rotating Electric Toothbrush review

Featured in: Best electric toothbrushes

Save 23% on the Amazfit Active smartwatch, our favorite fitness tracker under $150. It is exceptionally compact and comfortable to wear, it is packed to the brim with fitness tracking features, and its crisp, colorful display is hard to match in this price range. With this early Prime Day deal, the Amazfit Active is more affordable than ever before.

Read our full Amazfit Active review

Featured in: Best fitness trackers

Save $100 on our favorite smart ring. This compact and lightweight fitness tracker is a more discreet alternative to chunky smartwatches, and it offers heaps of valuable insights into your sleep, stress and general fitness. Available in a wide range of sizes and colors.

Read our full Oura Ring Generation 3 review

Featured in: Best fitness trackers

Save $50 on the stylish and ultra-light Amazfit Balance, our favorite fitness tracker for stress management. As its name clearly indicates, this smartwatch is designed to help you strike a perfect balance between physical activity and rest, with features like breathing exercises, daily exercise suggestions and heart rate variability measurements.

Read our full Amazfit Balance review

Featured in: Best fitness trackers

Save 40% 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.

Save 17% 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. We named it as the best option overall in our guide to the best exercise bikes you can buy in 2024.

Read our full Peloton bike review

Featured in: Best exercise bikes

Save $70 on our favorite budget-friendly exercise bike. Sturdy, comfortable to ride and accessible to larger individuals, this flagship YOSUDA machine is a great choice for cycling beginners. We gave this model a strong 4/5 rating and included it in our guide to the best exercise bikes on the market.

Read our full Yosuda Indoor Cycling Bike review

Featured in: Best exercise bikes

Save 15% on this sleek machine from YOSUDA, the maker of our favorite budget exercise bike. This no-frills machine is sturdy, quiet and comfortable to ride, and it can be easily adjusted to fit your height and arm's spread.

Save $80 on our favorite Apple AirPods Pro 2. These ultra-compact and comfortable earbuds come with up to 30 hours of battery life, and they can automatically pair to your iPhone and switch between Apple devices including Mac, iPad, and even Apple Watch.

Read our full Apple AirPods Pro 2 review

Save $250 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.
Editor's note Oct 8: This deal is $100 cheaper than July Prime Day

Save $275 on the latest Apple MacBook Air 2024, this 15-inch version is ideal for those who need more space on the screen while working.

Save $135 on this affordable GoTo telescope from Celestron. With a database containing over 4,000 stars, galaxies, nebulas and more, it will automatically locate and slew to your chosen subject within seconds.

Make sure you add the $35 coupon to your cart before checkout.

The 127SLT variant is also on sale via a coupon.

Editor's note, Jul 27, 2025 — It was around $12 cheaper in last October's Prime Day sale, so it could still drop more, but this is still cheaper than it has been since March.

Save $70 on this Newtonian Reflector from Celestron. Feast your eyes on Saturn’s rings, Jupiter’s Galilean moons, the Moon's craters and beyond thanks to its 114m aperture. The setup can be a challenge if it's your first scope, but your efforts will pay off.

Editor's note, Jul 27, 2025 — This is the cheapest we've seen it since early April. We saw them selling it for $219.95 before Prime Day last October, so there's room for the price to drop further.

Save $60 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. (For an extra $10, you can get the version with a Motor Drive to track the stars.)

Featured in: Best telescopes, Best beginner telescopes

Editor's note, Jul 27, 2025 — It's been dipping to around $250 for a few days at a time over the past few months, so there's still room for it to drop further.

Save 40% on these budget-friendly stargazing binoculars with a powerful 15x magnification and large 70mm objective lenses — we got beautiful views of the moon, Pleiades and Jupiter's Galilean moons.

Make sure you add the $10 coupon before checkout.

Review: Celestron SkyMaster 15x70 ★★★★
Featured in: Best binoculars for stargazing

Editor's note, Jul 27, 2025 — Although the $10 coupon isn't the biggest saving, they're a fantastic price for what they offer.

Save $60 on stargazing binoculars that are suited to night observing thanks to their powerful 15x magnification and 70mm objective lenses. They're the pro version of the binoculars we mentioned above, giving improved build and optics.

Editor's note, Jul 27, 2025 — The $20 coupon makes this a decent deal, but we saw them for $188.99 last Prime Day

Save $20 on the Nikon Prostaff P3 10x42 binoculars. We gave 4/5 stars to the Prostaff P3 8x42, which are identical except for the magnification. We were surprised by their optical quality for the price and the 42mm objectives are good for generalist use and birdwatching. Plus, they're waterproof and fogproof.

Editor's note, Jul 17, 2025 — They were $126.95 last Prime Day.

Save 57% on these 10x42 binoculars from Bushnell. Waterproof, nitrogen-purged and versatile, they're ideal for a number of activities from birdwatching and wildlife spotting to stargazing and getting a better view at sports games on a budget.

Editor's note, Jul 27, 2025 — This is a much lower price than they were last Prime Day. Annoying that the postage starts at $9.95, but it's still a great price.

Save 15% on the Orzorz Galaxy Lite star projector ahead of Prime Day when you apply the 15% coupon at checkout. It's rechargeable and projects high-quality imagery and comes with 5 slides included, with the option to purchase more to expand your library.

Full review: Orzorz Galaxy Lite ★★★★★
Featured in: Best star projectors

Editor's note, Jul 27, 2025 — It was $59.99 for a few days in May, but otherwise, this is the best price we've seen.