SARUNN ER Smart Ring
Model overview
2
Price range
$49.99
—
$49.99
Variant spread:
Medium
Available variants
Key differences
Size
7 • 8
Color
Silver • Rose Gold
How to choose
- Pick color and finish only after deciding on hardware requirements.
Trade-offs
Size
Different values may change day-to-day usage profile depending on your priorities.
Starting from $49.99
Smart Ring is a discreet health and fitness tracker designed for all-day wear. It monitors sleep patterns, heart rate, and blood oxygen levels while counting steps and tracking various activities. With IP68 waterproofing, it withstands water exposure up to 90 meters. The device features a long battery life, magnetic charging, and compatibility with both Android and iOS devices, offering lifetime app access without subscription fees.
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| Brand | SARUNN ER | UXOXU | DustAway | Twievo | VNEXFU | |
| Model | SR03 | |||||
| Color | ||||||
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| Price | $22.80 | $29.97 | $39.99 | $69.99 | $5.88 | $29.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | Mar 11, 2026 | Nov 9, 2025 | Dec 6, 2025 | Mar 11, 2026 | Mar 11, 2026 | Jul 20, 2025 |
| Package Dimensions | 3.62 x 3.62 x 1.22 inches | 3.07 x 2.91 x 1.85 inches | 3.15 x 3.15 x 1.18 inches | |||
| Item Weight | 3.2 ounces | 4 Grams | 3 Grams | 1 Milligrams | ||
| batteries | 1 A batteries required. (included) | 1 CR5 batteries required. (included) | 1 Nonstandard Battery batteries required. (included) | 1 Lithium Metal batteries required. (included) | ||
| Battery Life | 5 days, 30 days with charging case | 3-5 days normal use, Extendable to 60 days with charging case | Up to 7-Day | |||