CXJ 830 Smart Ring: NFC contactless payment
For the tech-savvy professional who values seamless daily routines, this smart ring lets you tap to pay or unlock your Android phone with ease. While many focus on its NFC capabilities, it’s really about simplifying your life—imagine breezing through checkout lines without fumbling for your wallet.
The ring’s slim steel design feels comfortable all day, and its IP68 waterproof rating means you can wear it worry-free in rain or during workouts. With up to 7 days of battery life, it keeps up with your busy schedule, and the built-in sensors track your activity discreetly. Pair it with the Samsung Health app to monitor your fitness goals effortlessly.
Features
- Waterproof up to 100 feet
- Heart rate and activity tracking
- Up to 7 days battery life
- Bluetooth 5.4 connectivity
- Skin temperature monitoring
- NFC contactless payment
General specs
- Brand: CXJ
- Model: 830
- Seller: Joom
- ID: 68cc6af3b96c59010f1e0c1b
- Material: Stainless Steel
- Access Methods: NFC
- OS Compatibility: Android
- First listed by seller: 11/15/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
Video Reviews
![LAN Airlines Boeing 787-8 [CC-BBI] takeoff from LAX](/media/cache/offer_show_video/https---i.ytimg.com/vi/2LCvkzJ3JvY/hqdefault.jpg)
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
CXJ 830 Black NFC contactless payment
|
itapring N-Ring-001 Black No app required for others
|
JAKCOM R5 Build-in 13.56MHz and 125kHz RFID cards
|
itapring N-Ring-001 Black Tap to share contact info
|
UniJethro SR11M Black Health and fitness tracking
|
Qjijolz R5 Multi Real-time heart rate and blood oxygen monitoring
|
|
| Brand | CXJ | itapring | JAKCOM | itapring | UniJethro | Qjijolz |
| Model | 830 | N-Ring-001 | R5 | N-Ring-001 | SR11M | R5 |
| Color |
|
|
|
|
|
|
| Rating |
|
|
|
|
|
|
| Price | $6.92 | $39.99 | $29.90 | $39.99 | $39.99 | $39.99 |
| Seller | Joom | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | January 7, 2026 | December 6, 2025 | December 6, 2025 | December 6, 2025 | December 6, 2025 | June 27, 2025 |
| Material | Stainless Steel | Tungsten Steel | Tungsten Steel | |||
| OS Compatibility | Android | iOS, Android | iOS, Android | iOS, Android | ||
| Size | 11 | 10 | 7 | |||
| Water Resistance | Waterproof | IP68 | IP68 | |||
