Overview
- The CRW-H001, which Casio announced July 30, adds continuous heart-rate, blood-oxygen, body-temperature and sleep tracking to its ring-watch line and pairs data to the AIZO Ring companion app over Bluetooth.
- Casio ships the device in three fixed sizes and a heavier metal body that weighs 19 grams, a design choice meant to ensure skin contact for optical sensors but one that departs sharply from most smart rings that weigh 2 to 4 grams.
- Battery power is split between a short-lived smart module that lasts about 4 to 6 days of active use or 25 days on standby and a separate watch battery rated for roughly two years before replacement.
- The CRW-H001 is available to order now only in mainland China at ¥1,990 (about $294) and Casio limits after-sales support to that market, with no confirmed international release date.
- Key uncertainties for buyers include how well Casio and the AIZO Ring app will interpret sensor data compared with established rivals, whether the app will require a paid subscription, and whether the ring’s weight and limited sizing will affect overnight comfort and sensor accuracy.