A smart ring that wants to replace both your watch and your tracker
The Casio smart ring, officially called the CRW-H001M-8 Ring Watch, is a heart rate tracking ring and SpO2 monitoring wearable that combines a miniature digital watch face with smart health sensors in a compact band worn on your finger.
Casio is not dipping a toe into wearables; it is cannonballing in with a product that questions the current smart ring playbook. While rivals hide all information in an app, the Casio smart ring uses a compact digital display to show the time directly on the ring, so you do not need to pull out your phone to do something as basic as checking the clock. That is the key difference: Casio believes a ring on your hand should behave like a timepiece first, and a silent health gadget second.
The design is unapologetically watch-like. The ring measures 25.3 x 19.5 x 6mm, weighs 19 grams, and uses ceramic and stainless steel with mineral glass for protection. This puts it firmly in the jewelry-meets-instrument camp, not the barely-there jewelry niche. In other words, Casio is betting that people who grew up with G-Shocks are ready to wear a tiny digital watch on their finger.
Health tracking that competes with wristbands, not just rings
On paper, the CRW-H001M-8 looks less like a novelty and more like a full-fledged wellness device. It can monitor heart rate, blood oxygen levels, body temperature, sleep, steps, calories burned, and workout activities, covering most of what a mid-range fitness band does, only in ring form. Calling it an Oura Ring alternative would undersell how much Casio has crammed into this tiny chassis.
This SpO2 monitoring wearable leans hard into software, too. The companion app provides training logs, workout analysis, health reports, and menstrual cycle tracking, which means Casio is not content to stop at raw sensor data. It wants to own the daily health narrative in your phone. Vibration alerts for calls, notifications, silent alarms, health alerts, and custom reminders round out the feature set, turning the ring into a discreet nudge engine for your day.
There is one important caveat: Casio explicitly frames these features as fitness and wellness tools, not medical instruments. That honesty matters. It keeps expectations in check and puts the CRW-H001M-8 in the same consumer-wearable bracket as other smart rings and bands rather than pretending to be a clinical device.
Battery life and dual-power design: Casio’s sneaky advantage
Battery is where Casio shows its decades of watch experience. The smartwatch module in the ring delivers 4 to 6 days of battery life on a full charge and can stretch to around 25 days in standby mode, while the watch display battery is rated to last about two years. That split system is the quiet masterstroke: your health tracking lives on a rechargeable module, but the basic watch display keeps ticking for years.
This means the worst-case scenario is not a useless ring but an old-school timekeeper still telling you the hour. That is a direct rebuke to smart rings that turn into dumb jewelry once the battery dies. Casio has also built in world time, a stopwatch, alarm, automatic calendar, LED backlight, and both 12-hour and 24-hour time formats. Put bluntly, “Casio’s smart ring tries to be a watch that refuses to die even when its smart side takes a break.”
Bluetooth connectivity and vibration alerts tie the whole experience back to your phone, but they are supporting actors, not the core story. Casio is clearly prioritising independence and reliability over aggressive always-on connectivity, which feels like the right call for something this small that you might forget to charge.
Beyond watches: Casio tests the limits of its brand
The Ring Watch is priced at 1,990 CNY (around USD 295, approx. RM1,350), placing it squarely in premium smart ring territory without trying to undercut rivals on price alone. For now, Casio notes that the product is currently sold only in one market, and after-sales support is also limited there. That limited rollout feels less like hesitation and more like a controlled experiment in redefining what Casio stands for.
At the same time, Casio is reinforcing its core with new G-Steel GST-B1000 watches that shrink G-Shock bulk while keeping durability. These models use a bio-based carbon-reinforced resin case with a stainless steel bezel and weigh 58 grams, aiming to be more practical for daily wear than older all-metal G-Steel variants. They also combine Tough Solar charging with Bluetooth connectivity for automatic time synchronisation, smartphone-based settings, and a phone finder function.
Seen together, the GST-B1000 line and the CRW-H001M-8 suggest a clear strategy: Casio wants to cover both the wrist and the finger with connected products that still feel like instruments. The company is betting that its reputation for durable, functional watches can carry over to health-focused wearables without diluting the brand.
What the Casio smart ring means for everyday users
For ordinary users, the CRW-H001M-8 is about practicality more than tech flash. The ring’s vibration alerts for calls, notifications, and silent alarms make it useful in meetings, gyms, or anywhere a buzzing phone would be rude. Health alerts and custom reminders add another layer of quiet assistance, nudging you toward better habits without another screen screaming for attention.
Meanwhile, on the wrist, the new GST-B1000 series uses lighter bio-based materials to make tough watches more comfortable for everyday wear, while Bluetooth and Tough Solar reduce daily fuss. This combination of materials is designed to make the watch more practical for daily wear compared to the heavier, all-metal G-Steel variants that preceded it. In a market full of thin, fashion-first wearables, Casio’s approach feels refreshingly utilitarian.
The conclusion is straightforward: if you want a heart rate tracking ring that still behaves like a real watch, the Casio smart ring is one of the first products to take that idea seriously. It will not be for everyone—the design is bold and the ecosystem still young—but it signals a future where your health tracker is not invisible, it is proudly a Casio.
