RingConn Gen 2 Smart Ring
- 12 day battery life, 22 milliamp hour cell
- No display, Bluetooth to Android or iOS
- 100 meter water resistance
- Titanium case in Royal Gold
- Sleep, stress, heart rate, HRV and blood oxygen metrics
- 1 year manufacturer warranty
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A screenless titanium smart ring for sleep and recovery tracking, with a long battery and a deep water rating. Ring sizes are not listed and the charge time entry looks wrong, so check both before ordering.
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ASIN: B0DG2SYGF3Model: RCA-01Category: Fitness Trackers
Overview
A sleep-focused wearer who prefers no screen on the wrist gets a titanium smart ring in the RingConn RCA-01, with no display and a Bluetooth link to a phone. It measures sleep, stress, heart rate, heart rate variability and blood oxygen.
No screen means nothing to glance at overnight, which suits sleep tracking. The limitation is that all data lives on the phone, and the sizing information is absent.
Who it's for
Overnight recovery tracking and all-day wear without a screen are the setting. Runners who want pace and route on the wrist, or buyers who cannot confirm a ring size, should look elsewhere.
Pros and cons
- Deep water resistance
- Battery rated in days
- Charging case in the box
- Wide sensor list
- Ring sizes not listed
- Charge time entry looks wrong
- Weight and size entries look like package data
Performance notes
A ring reads through the skin of the finger, so fit decides signal quality: a loose ring gives noisy heart rate and oxygen data. With no screen, all readouts live on the phone, and the small cell sets the battery ceiling.
Where it stands among fitness trackers
- 90 hours battery charge time: longer than 100% of the fitness trackers we list.
From the specs of the 43 fitness trackers we list; not a test result.
Specifications
| Brand | RingConn |
|---|---|
| Model | RCA-01 |
| Dimensions & fit | |
| Water Resistance Depth | 100 meters |
| Item Dimensions | 11.3 x 4.3 x 4.7 inches |
| Item Weight | 0.38 Kilogramshigher than 100% of 22 fitness trackers |
| Capacity & performance | |
| Battery Capacity | 22 milliamp hourslower than 81% of 28 fitness trackers |
| Memory Storage Capacity | 2 MBlower than 88% of 26 fitness trackers |
| Power & efficiency | |
| Battery Average Life | 12 dayshigher than 62% of 27 fitness trackers |
| Battery Charge Time | 90 hours (as listed)higher than 100% of 20 fitness trackers |
| Battery Cell Type | Lithium Polymer |
| Construction & materials | |
| Case Material Type | Titanium |
| Color | Royal Gold |
| Band Material Type | Metal |
| Compatibility & installation | |
| Compatible Phone Models | Android Devices, iOS Devices |
| Connectivity Technology | Bluetooth |
| Compatible Devices | Smartphone |
| Human Interface Input | Buttons |
| RAM Memory Installed | 768 KB |
| Warranty & support | |
| Warranty Description | 1 Year Manufacturer |
| Supported Application | Fitness Tracker |
| Warranty Type | Limited |
| Other details | |
| Gps Geotagging Functionality | No GPS |
| Wearable Computer Type | Smart Ring |
| Display Type | No Display |
| Builtin Media | Charging Case, Instruction Manual, Quick Guide, RingConn Ring, Type-C Cable |
| Metrics Measured | Sleep Duration, Stress, Heart Rate, Heart Rate Variability, Blood Oxygen Monitor |
| Additional Features | Activity Tracker |
| Controller Type | Android, iOS |
| Operating System | Wear OS 3.0 |
| Shape | Round |
| Sport Type | Multi-Sports, Running, Swimming, Walking, Yoga |
| Style Name | Minimalist |
| Target Audience | Unisex Adults |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP68 |
Closest rivals on specs
Samsung Galaxy Fit 3 Fitness Tracker 40mm- Memory Storage Capacity 0 vs 0.02 GB (-87%)
- Battery Capacity 22 vs 208 mAh (-89%)
- Item Weight 0.84 vs 0.11 pounds (+664%)
Samsung Galaxy Fit 3 Fitness Tracker- Memory Storage Capacity 0 vs 1.6 GB (-100%)
- Battery Capacity 22 vs 208 mAh (-89%)
- Item Weight 0.84 vs 0.22 pounds (+282%)
Amazfit Band 7 Fitness Tracker- Memory Storage Capacity 0 vs 2.3 GB (-100%)
- Battery Capacity 22 vs 232 mAh (-91%)
- Battery Average Life 12 vs 20 days (-40%)
Frequently asked questions
How do I set up and charge the RingConn RCA-01?
The box includes a charging case, a Type-C cable, an instruction manual and a quick guide. The charge time reads 90 hours, which looks like a typo, and no steps are given.
Does the RingConn RCA-01 have a screen?
No. The display type is no display, so readings are viewed on a connected phone.
Does the RingConn RCA-01 have GPS?
No. The GPS field reads no GPS.
Which ring sizes does the RingConn RCA-01 come in?
The listing does not give ring sizes, so ask the seller before ordering.