DERAM ONE Jackcom R4 Smart Ring: NFC technology
Meet the Jackcom R4 Smart Ring—where tech meets fashion in a way that actually makes sense. This isn't just another gadget; it's a waterproof, NFC-enabled piece of genius that keeps an eye on your health while looking good doing it. Whether you're dressing up or keeping it casual, this unisex ring slips right into your style (and your life) without missing a beat.
Why you'll love it: First off, it's like having a mini health coach on your finger, tracking your wellness so you don't have to sweat the small stuff. Then there's the NFC tech—tap and go, because who has time for cords and passwords? Plus, it's waterproof (because life happens), and let's not forget, it plays nice with both IOS and Android. Oh, and did we mention it looks like a sleek piece of jewelry? Because it totally does.
Features
- Health monitoring
- Waterproof design
- Unisex jewelry
- Compatible with IOS and Android
- NFC technology
General specs
- Brand: DERAM ONE
- Model: Jackcom R4
- Seller: Joom
- ID: 653a3614fff928018dbe4e49
- Compatibility: IOS, Android
- Waterproof: Yes
- NFC: Yes
- First listed by seller: 6/9/25
If you are interested in more details, you can find full information on the seller's page.
Price History for seller Joom
Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
DERAM ONE Jackcom R4 NFC technology
|
UniJethro 13# Advanced health tracking sensors
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UniJethro SSring Pro Fitness and health monitoring
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Health Fitness Tracker Ring Stylish & Elegant Design
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Smart Ring Advanced Health Tracking
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abcc R11m Advanced health monitoring capabilities
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|
| Brand | DERAM ONE | UniJethro | UniJethro | Oucscru | MUNBYN | abcc |
| Model | Jackcom R4 | 13# | SSring Pro | R11m | ||
| Color | ||||||
| Rating |
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| Price | $53.37 | $39.99 | $39.99 | $49.99 | $69.99 | $59.99 |
| Seller | Joom | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | December 7, 2025 | December 6, 2025 | December 9, 2025 | December 6, 2025 | December 6, 2025 | December 6, 2025 |
| package_dimensions | 3.98 x 3.27 x 2.83 inches | 3.5 x 3.5 x 2.7 inches | 3.1 x 2.8 x 1.97 inches | 2 x 2 x 2 inches | ||
| item_weight | 5.4 ounces | 0.25 Pounds | 3.2 ounces | 0.64 ounces | ||
| batteries | 1 CR5 batteries required. (included) | 1 Nonstandard Battery batteries required. (included) | Nonstandard Battery batteries required. | |||
| memory_storage_capacity | 4 MB | 4 MB | 64 MB | |||
| country_of_origin | China | China | China | China | ||
| date_first_available | November 12, 2024 | April 28, 2025 | June 26, 2025 | January 2, 2025 | ||
