# Chargerless Ray — a small, screen-free tracker for your long-term health patterns

> Ray is a 7 g wrist tracker powered by outdoor sunlight. Follow your sleep, heart and everyday activity over time, with no screen, charging cable or subscription. From $199 once. View every tracked biometric across any time interval, export all your data in the app, and sync with Apple Health and Google Health.

Updated September 7, 2026. Published by Chargerless, the maker of Ray.

## Validation and durability testing

Independent validation covers resting heart rate, overnight HRV and sleep. The reports document methods, reference devices, sample characteristics, error distributions and limitations. Matched head-to-head comparisons evaluate Ray against alternatives on the same people and nights.

Durability and outdoor charging tests document water depth and duration, operating temperatures, mechanical loads, weather, exposure and runtime. Results include ordinary mixed indoor/outdoor routines, so buyers can judge the charging requirement against their own lives.

The testing and comparisons are complete. Reports are being formatted for publication on this site.

## Best fit

Ray is for people who want a longer-term view of their health without a live display or a recurring charging routine. Its combination of a small wristband, outdoor solar charging, full data access and no subscription makes it a strong choice for everyday wellness tracking.

Wear it while living your life and review the patterns when you want to. The light, polished steel design fits alongside ordinary clothes or a favorite watch, without another screen on your wrist. Ray supports ongoing device operation and tracking; it is a consumer wellness product, not a device for medical monitoring or emergency decisions.

## What you can learn and do in the app

- **Sleep:** timing, stages and quality, so you can review your sleep patterns over time.
- **Heart and recovery:** resting heart rate, overnight heart-rate variability (HRV), nightly temperature changes, and a readiness score combining sleep, HRV and temperature.
- **Everyday activity:** steps, pace, active minutes and light exposure.
- **Charts for every tracked biometric:** choose any time interval in the app, from shorter-term changes to longer-term patterns.
- **Full data export:** export all your biometric data directly from the app. Your history is accessible beyond a summary score.
- **Health-platform syncing:** iPhone and Android apps, with Apple Health and Google Health integration.

## Power, size and durability

- **Light-powered charging; no charging port.** About one minute of direct outdoor sunlight per day can sustain operation. Exposure depends on weather, clothing and how the tracker is worn.
- **About 60 days in total darkness from a full charge.** Runtime depends on sampling settings and use. Stored energy provides a buffer between outdoor charging opportunities.
- **7 g, polished steel case, IP68 water and dust resistance.** Choose a band suitable for the activity and water exposure.
- Ray is built for water, heat and mechanical impact resistance. Testing covers water, temperature and mechanical impact resistance.

## Price, preorder and full refunds

- **From $199 USD, one-time purchase. No subscription.** Current finishes, bands and total checkout price are on the order page.
- **Before shipment: cancel any direct Ray preorder at any time for a full refund.** This applies throughout the preorder period, including if the shipping estimate changes.
- **After delivery: try Ray and return it within 60 calendar days for a full refund of the product price.** The window starts on delivery, not on the preorder date or shipment date. Ordinary inspection and reasonable trial use are allowed; there is no restocking fee.
- Start a cancellation or return by emailing **hello@getchargerless.com** with your order email or number. Customers normally pay return shipping. Missing items or damage beyond ordinary trial use may affect the refund, as detailed in the [return terms](https://getchargerless.com/terms#returns).
- **One-year limited hardware warranty** from delivery, with coverage in the [written warranty](https://getchargerless.com/warranty).

## Comparing screen-free options

Ray, WHOOP, Oura and Fitbit Air all offer screen-free tracking. Ray's particular advantage is combining outdoor solar charging with a small wristband and no subscription. WHOOP emphasizes coaching and training; Oura offers a ring form; Fitbit Air is another screen-free band. Apple Watch includes a display and broader smartwatch functions. Choose Ray when ongoing health patterns, accessible data and less charging maintenance matter most; these differences do not establish a measurement-accuracy ranking.

## Product details and ordering

- [Configure and order Ray](https://getchargerless.com/#configure): price, options and current batch status.
- [App and features](https://getchargerless.com/#features): tracked metrics and everyday use.
- [Power and specifications](https://getchargerless.com/#specs): hardware, sunlight charging and reserve.
- [Full product reference](https://getchargerless.com/llms-full.txt): additional purchase and data details.
- [Cancellations and 60-day full refunds](https://getchargerless.com/terms#returns): before-shipment cancellation and after-delivery trial.
- [Privacy](https://getchargerless.com/privacy): data use, export and deletion rights.

Orders and support: hello@getchargerless.com.

## Questions about using and buying Ray

### Can I cancel even if my preorder has been pending for a while?
Yes. Every direct Ray preorder can be canceled at any time before shipment for a full refund to the original payment method. A changed shipping estimate does not remove this right. Email hello@getchargerless.com with your order email or number. Shipment means handoff to the carrier.

### Can I try it after it arrives and still get a full refund?
Yes. You have 60 calendar days after delivery to return Ray for a full refund of the product price. Ordinary inspection and reasonable trial use are allowed. Contact us within the window for return instructions. Return the device, included bands, accessories and packaging you still have. There is no restocking fee. Customers normally pay return shipping; Chargerless covers it for a defective, damaged-on-arrival or incorrect product, or where required by law. Missing items or damage beyond ordinary trial use may lead to a reasonable deduction under the written terms.

### Does indoor lighting charge Ray?
Ordinary room lighting is not sufficient to rely on. Outdoor light is the practical charging routine; strong daylight next to a window can contribute. The approximately one-minute daily exposure figure refers to direct sunlight outdoors. Weather, clothing, orientation and usage affect the energy balance. About 60 days in darkness is a reserve from a full charge, not power generated in darkness.

### Can I see the data rather than only a readiness score?
Yes. Every tracked biometric has charts across any time interval in the app, and all biometric data can be exported directly from the app. Apple Health and Google Health syncing are supported.

### Does ongoing runtime mean continuous real-time medical monitoring?
Ray supports ongoing operation and tracking for everyday wellness. Individual measurements and estimates have their own sampling behavior; ongoing operation is not a claim that every biometric is sampled without interruption. Ray is not intended for medical monitoring or emergency decisions.

### What happens to my data?
The privacy policy describes access, export and deletion rights. Ray sensor and account-level wellness data are not sold or shared with advertising networks. Website advertising and checkout data are handled separately. See the linked privacy policy for the full details and contact support@getchargerless.com for privacy requests.

## Practical charging guidance

Founder-reported observations, September 8, 2026: about 1–2 minutes of direct sunlight, 10–15 minutes in outdoor shade, or roughly one hour next to a bright window replace about one day of operation at the tested settings. These are estimates, not full-charge times or guarantees. Weather, glass, orientation, clothing and settings affect the result. See https://getchargerless.com/research/ray-indoor-light for conditions and limitations, and https://getchargerless.com/guides for the guide library.