Casio has announced the GBX-H5600KI-5, a new addition to its G-LIDE series and the fourth signature model designed with pro surfer Kanoa Igarashi. The watch is currently available for pre-order in Japan for ¥50,600 ($314) and is scheduled to begin shipping later this month.
G-LIDE GBX-H5600KI-5 Specifications
Rather than a standard digital watch, the GBX-H5600KI-5 functions as a dedicated fitness tracker housed in a traditional G-Shock chassis. It is equipped with an optical heart rate sensor and a 3-axis accelerometer. For the software side of its health tracking, Casio is continuing its partnership with Polar, utilizing the fitness company’s algorithms to process training data, cardio load, and sleep recovery metrics.
While it supports standard multi-sport tracking for running and walking, measuring pace, distance, and stride, the software is heavily geared toward ocean use. The watch displays moon phases, sunrise and sunset times, and a tide graph. You can configure the tide settings for approximately 3,300 global locations by pairing the watch with the Casio Watches smartphone app over Bluetooth. The app connection also handles automatic time adjustments, basic phone notifications, and activity log syncing.
For the display, Casio opted for a Memory-in-Pixel (MIP) LCD. MIP panels are standard in outdoor sports wearables because they maintain high contrast and readability in direct sunlight without draining the battery.
In terms of build materials, the bezel and band are constructed from a bio-based resin. The brown mixed-color molding is meant to reference the coastal cliffs of Ericeira, Portugal, where Igarashi trains, while purple accents are used on the watch face. Because the resin is mixed during manufacturing, the physical pattern on each unit will vary slightly.
The watch weighs 47 grams. It retains the standard 200-meter water resistance and shock resistance expected from the brand.
Battery life depends heavily on how the sensors are used. According to Casio’s spec sheet, the watch will run for a maximum of 35 hours with continuous heart rate tracking enabled. If the heart rate monitor is turned off and it is used strictly in watch mode, it will last for about a month. It charges via a proprietary USB Type-A cable, but it also includes built-in solar charging to help maintain the battery level during outdoor exposure.
In related news, Casio has recently launched the lightweight Baby-G BGA-290SA watches with a premium metallic finish, alongside a new translucent G-Shock inspired by 90s streetwear in the US.
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