DERAM ONE Jackcom R4 Smart Ring: NFC technology
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.
General specs
- Brand: DERAM ONE
- Model: Jackcom R4
- Seller: Joom
- Compatibility: IOS, Android
- Waterproof: Yes
- NFC: Yes
If you are interested in more details, you can find full information on the seller's page.
View on seller's site
#publicidad
$44.74
Last price update: 6/9/25
Available to order
Shipping options
Delivery to 
United States
United States
Unavailable
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
DERAM ONE Jackcom R4 NFC technology
|
Smart Ring with NFC NFC technology
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Multifunctional Smart NFC Ring NFC technology
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Zhuohao Connect NFC NFC technology
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Wanglinnge Connect NFC NFC technology
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UniJethro 13# Advanced health tracking sensors
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| Brand | DERAM ONE | SILVERHOO | hegshjuz | Zhuohao | Wanglinnge | UniJethro |
| Model | Jackcom R4 | Connect NFC | Connect NFC | 13# | ||
| Color | ||||||
| Rating |
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| Price | $44.74 | $5.50 | $5.62 | $7.21 | $5.68 | $39.99 |
| Seller | Joom | Joom | Joom | Joom | Joom | Amazon |
| Update | June 4, 2025 | July 31, 2025 | August 2, 2025 | August 2, 2025 | August 2, 2025 | June 27, 2025 |
| Compatibility | IOS, Android | Android phones | Android 6 | Android 8 and above | ||
| Material | Stainless steel | Stainless steel | Stainless steel | |||
| Technology | NFC | NFC | NFC | NFC | ||
Smart Ring
$44.74
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