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KANOA IGARASHI SIGNATURE MODELのメインビジュアル

International pro surfer Kanoa Igarashi’s fourth signature model

Introducing the fourth signature model from pro surfer Kanoa Igarashi, who is a mainstay in the World Surf League (WSL) Championship Tour, the world’s ultimate pro-surfing series. Based on the G-LIDE GBX-H5600 with heart rate monitor, this signature watch boasts a mixed-color bio-based resin bezel and band inspired by cliffs in Portugal, one of the surfer’s home and training bases — plus a special design adorned in places with Igarashi’s signature.

Photo of Kanoa Igarashi

Kanoa Igarashi

Influenced by his parents, Igarashi began surfing at the age of three in his hometown of Huntington Beach, California. Including his junior career, Igarashi went on to set a series of remarkable records across the United States. In 2016, he qualified for the world’s premier professional surfing circuit, the WSL Championship Tour (CT), becoming the youngest surfer in history to compete at that level. In 2019, at the third event of the CT season, he claimed his first career victory — also marking the first-ever CT win by an Asian surfer.

In 2021, Igarashi represented Japan in the surfing competition at the Tokyo 2020 Olympic Games, the first year the sport was featured as an official event, and won the silver medal. At the 2022 ISA World Surfing Games, Igarashi won a perfect first place in all eight of the heats to capture his long-sought World Champion title.

In the 2025 CT season, Igarashi reinforced his status as one of the world’s elite surfers with a 7th-place finish in the WSL world rankings. With his sights set on the CT World Title, he continues to sharpen his performance as he prepares for the upcoming Olympic Games in Los Angeles, his hometown.

FEATURES

GBX-H5600KI-5, featuring a brown mixed-color molding that recreates the appearance of Portuguese quayside walls

Color scheme inspired by Portuguese sea cliffs

Mixed-color molding in brown tones expresses landscapes from Portugal — one of Igarashi’s home and training bases — such as the cliffs and rocky shores surrounding the renowned surf destination of Ericeira. Combined with a tide graph depicting ocean waves, this achieves a design befitting a G-LIDE. An accent color of purple evokes the “magic hours” of early morning and twilight when the sky appears to be painted colorfully.

An image featuring a design of Igarashi's handwritten signature on the face and back cover

Design details imbued with Igarashi’s individual identity

Igarashi’s signature is incorporated into the design on the watch face and case back, and Igarashi’s surfer number, 50, adorns the band — special design features for a collaboration model emphasizing the connection between surfers and G-SHOCK.

GBX-H5600KI-5 Image Supporting Diverse Functions

Diverse functions to support athletic use

Based on the GBX-H5600, the watch is equipped with a heart rate monitor and accelerometer to provide measurement functions that support four different activities, along with a tide graph, moon data, and more. The MIP LCD provides high-definition display of diverse measurement data. Training and sleep analysis powered by Polar’s algorithms is included as well. A watch equipped to support intense use day after day.

GBX-H5600KI-5 Smartphone Link Image

Smartphone Link

Smartphone pairing via Bluetooth® delivers automatic time correction and makes it easy to configure tide graph settings from the app. Tracked data can also be sent to a paired smartphone and checked in training logs and life logs. Detailed training and sleep analysis data and more can be reviewed as well.

Bio-based resin image of GBX-H5600KI-5

Bio-based resin

Key resin components used in the bezel, case, and band are made with bio-based resin, a material expected to help reduce environmental impact.
* Image is included for illustrative purposes.

SPECIFICATIONS

CASIO WATCHES (Smartphone app)

Multiple functions, all at your fingertips
CASIO WATCHES
(Smartphone app)

- Automatic time adjustment
- Easy watch setting
- World time
(about 300 cities)
- Tide graph setting: About 3,300 points around the world
- Notification function: Incoming calls, incoming e-mails, new social media posts, calendar notifications, reminders
- Training analysis data
- Activity log data
- Life log data
- Sleep tracking data
- Phone finder
- Distance correction via smartphone GPS

Watch Functions

• Shock-resistant structure
• 20 bar water resistance
• USB charging + solar-assisted charging
• Smartphone Link
(automatic connection)
• Heart rate measurement
• Blood oxygen level measurement*
• Step tracker
• Activity tracking
• Activity log
• Life log
• Training analysis
(powered by POLAR®)
• Sleep tracker
(powered by POLAR®)
• Breathing exercises
(powered by POLAR®)
• Almanac
(sunrise and sunset times, moon age)
• World time
(38 cities)
• Tide graph
• Airplane mode
• Stopwatch
• Countdown timer
• 4 daily alarms
• Vibration function
• Full-auto LED backlight 
(Super Illuminator)

* The blood oxygen level measurement function is not intended for use in diagnosing illness or as a medical device. It is intended only for use in maintaining general health.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. Any use of such marks and logos by Casio Computer Co., Ltd. is under license.

The Polar® word mark and logos are registered trademarks owned by Polar Electro Oy. Any use of such marks and logos by Casio Computer Co., Ltd. is under license.

Nightly Recharge™ is a trademark owned by POLAR Electro Oy.

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