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 21% on the Blueair Blue Pure 511i Max. This stylish appliance is essentially the smaller version of our favorite air purifier on a budget, the BlueAir Blue Pure 411i Max. With its great air-cleaning performance, user-friendly design and smart features, it is one of the best options for tight spaces.

Save 36% on the Philips Sonicare ProtectiveClean 5300. With over 14,000 five-star reviews, it is one of the most popular electric toothbrushes on Amazon — and understandably so. It is sleek, travel-friendly, efficient and boasts up to 14 days of battery life, plus it comes with two spare brush heads and a travel case.

Save $30 on the ultra-premium Oral-B iO Series 10, one of the best electric toothbrushes money can buy, and our favorite model with smart features. With its excellent performance and advanced design, it is a go-to choice for those who do not want to cut any corners.

Read our full Oral-B iO Series 10 review (★★★★½)

Featured in: Best electric toothbrushes

Save 14% on the Bitvae R2. We gave this model a strong 4.5/5 rating and included it in our guide to the best electric toothbrushes as the best budget option. The Bitvae R2 comes with a whopping 8 brush heads, five cleaning modes and up to 60 days of battery life, so you can get a lot of value for your buck.

Read our full Bitvae R2 Rotating Electric Toothbrush review (★★★★½)

Featured in: Best electric toothbrushes

Save 37% on the smaller size version of the Garmin Venu 2 smartwatch, one of the best Garmin watches for daily use. With its comfortable strap, sleek design and beginner-friendly features, it is a perfect option for those who do not like bulky, intimidating devices.

Save 23% on the Amazfit Active, our favorite smartwatch on a budget. With its compact build, comfortable straps, heaps of fitness tracking features and crisp, colorful display, this unassuming fitness tracker delivers excellent value for money. With this early Prime Day deal, the Amazfit Active is now more affordable than it was during the Black Friday sale.

Read our full Amazfit Active review (★★★★)

Featured in: Best fitness trackers

Save $50 on the stylish and ultra-light Amazfit Balance, one of the best smartwatches for stress and sleep management. This affordable gem 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 (★★★★½)

Featured in: Best fitness trackers

Save $50 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. The cherry on top? It comes with a handy tablet mount.

Read our full Yosuda Indoor Cycling Bike review (★★★★)

Featured in: Best exercise bikes

Save 20% on this sleek machine from YOSUDA, the maker of our favorite budget exercise bike. Just like its predecessor, it is sturdy, quiet and comfortable to ride, and it can be easily adjusted to fit your height and arm spread. The main difference? The Pro model comes with wider app compatibility.

Save $50 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 $200 on the 'world's most beloved telescope' this Prime Day. Explore nighttime wonders such as planets, the Moon and deep space objects with exceptional ease and clarity. We think it's the best telescope out there and it's not every day we see it discounted.

Full Celestron NexStar 8SE review ★★★★½
Featured in: Best telescopes

Editor's note, Jul 4, 2025 — We saw it as low as $1,359 last year, so there's room for the price to drop even further.

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 4, 2025 — Deal still live. 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 4, 2025 — Deal still live. 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 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 4, 2025 — Deal still live. 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 4, 2025 — Deal still live. 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 4, 2025 — Deal still live. 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 4, 2025 — Deal still live. 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 4, 2025 — Deal still live. It was $59.99 for a few days in May, but otherwise, this is the best price we've seen.

Save 20% on the Pococo Galaxy Projector. We thought it projected impressive, bright and vivid imagery, and it comes in four colors and is rechargeable, so you're not restricted in where you put it in your home.

Full Pococo Galaxy Star Projector review ★★★★
Featured in: Best star projectors

Editor's note, Jul 4, 2025 — We've seen it as low as $71.99 in previous deals, and they've inflated the 'before' price from $99.99, but this is still a good price.