spywkn Smart Fitness Tracker Ring: Health & Sleep Tracker
But wait, there's more! This little wonder doesn't just sit pretty on your finger. It's a fitness powerhouse, tracking every step, calorie, and mile with precision. Whether you're running, swimming, or just trying to remember where you left your keys, it's up for the challenge. Plus, with its waterproof design, you can take it from the pool to the party without a second thought.
And here's the kicker—it doubles as a secret weapon for group photos. No more awkwardly asking strangers to take a picture; just use your ring. Oh, and did we mention the charging case? It's not just practical; it's a showstopper with a diamond design that screams luxury. Honestly, it's the kind of gift that makes you look like a genius (and maybe a little bit fancy).
Product details
General specs
- Brand: spywkn
- Seller: Amazon
- Sensors: Heart rate, SpO2, Blood pressure
- Battery Life: 3-5 days per full charge, 400mAh battery provides 15 recharges
- Compatibility: iOS, Android
- Waterproof: Yes
If you are interested in more details, you can find full information on the seller's page.
Buy on Amazon
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Shipping options
India
Comparison with similar products
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| Brand | spywkn | Ysyess | Duobuy | spywkn | Delcast | Mefoma |
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| Price | $49.99 | $39.99 | $69.98 | $49.99 | $55.99 | $59.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | June 8, 2025 | May 13, 2025 | May 12, 2025 | June 9, 2025 | June 12, 2025 | May 13, 2025 |
| package_dimensions | 3.07 x 2.91 x 1.85 inches | 3 x 3 x 1.7 inches | 3.58 x 3.5 x 1.85 inches | 3 x 3 x 1.8 inches | ||
| item_weight | 3.84 ounces | 4.4 ounces | 4.2 ounces | 3.2 ounces | ||
| batteries | 1 A batteries required. (included) | 1 Nonstandard Battery batteries required. | 1 AA batteries required | 1 CR5 batteries required. (included) | ||
| date_first_available | December 4, 2024 | April 16, 2025 | February 9, 2025 | |||
| manufacturer | Duobuy | spywkn | Mefoma | |||
Reviews
Felix Wiśniewski
8 June 2025
Duke
8 June 2025
Ana López
8 June 2025
Julia Moreau
8 June 2025
Carmen King
8 June 2025