SARUNN ER Smart Ring with Sleep Monitoring: Diverse health monitoring modes
General specs
- Brand: SARUNN ER
- Seller: Amazon
- package_dimensions: 3.62 x 3.62 x 1.22 inches
- item_weight: 3.2 ounces
- batteries: 1 A batteries required. (included)
- standing_screen_display_size: 0.1 Inches
- waterproof_depth: 90 meters
- battery_life: 5 days, 30 days with charging case
If you are interested in more details, you can find full information on the seller's page.
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$17.59
Last price update: 8/5/25
Available to order
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Delivery to 
United States
United States
Available
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| Brand | SARUNN ER | Aichiken | Aichiken | Domhong | Generic | HitTopss |
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| Price | $17.59 | $65.99 | $65.99 | $42.99 | $55.98 | $29.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | August 5, 2025 | June 27, 2025 | June 27, 2025 | June 27, 2025 | June 27, 2025 | July 19, 2025 |
| package_dimensions | 3.62 x 3.62 x 1.22 inches | 3 x 3 x 1 inches | 3 x 3 x 1 inches | 4.02 x 3.11 x 1.26 inches | 3.07 x 2.91 x 1.73 inches | |
| item_weight | 3.2 ounces | 2.39 ounces | 2.39 ounces | 3.2 ounces | 2.89 ounces | |
| batteries | 1 A batteries required. (included) | 1 Lithium Ion batteries required. (included) | 1 Lithium Ion batteries required. (included) | 1 Nonstandard Battery batteries required. (included) | 1 Lithium Polymer batteries required. (included) | |
| memory_storage_capacity | 4 MB | 4 MB | 512 KB | 64 MB | ||
| country_of_origin | China | China | China | |||
| date_first_available | April 2, 2025 | April 21, 2025 | December 25, 2024 | |||
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