Casio G-Shock GM-H5600 Leak Reveals MIP LCD, Heart Rate Sensor, Square Design, and Next Month Launch

The world of watchmaking is abuzz with the latest news from Casio, a brand known for its rugged and reliable timepieces. According to fresh details leaked online, the upcoming Casio G-Shock GM-H5600 is set to make waves in the market with its innovative features and sleek design.

Next year, new regulations will impact tech companies, including those that manufacture watches, which may lead to changes in production strategies. However, for now, let’s focus on the GM-H5600’s specifications, including the presence of an MIP (Multi-Injection Process) LCD screen. This display technology is known for its improved readability and higher contrast compared to traditional panels, making it ideal for everyday wear.

The watch is expected to feature a heart rate sensor, which will provide users with valuable health monitoring data. The design is believed to draw inspiration from classic square G-Shock watches while incorporating modern fitness tracking capabilities. Reports indicate that the device will be equipped with motion sensors capable of tracking steps and workout activities.

Design-wise, the GM-H5600’s fusion of durability and premium aesthetics makes it suitable for both casual wear and business environments. The watch is expected to feature a silver or gold finish, reinforcing its premium positioning within the G-Shock lineup.

The GM-H5600 is rumored to be launched next month, with the first sale taking place in Japan before expanding to other markets over time. Two color variants are expected to be available at launch, including silver and gold finishes.

While detailed specifications and official pricing have yet to be confirmed, the device is widely expected to target users looking for a rugged digital watch with added health monitoring features.

In related news, Casio has been busy launching new watches across various lines. The G-Shock MTGB4000D-1A, for example, has made its debut in the US market under the premium MT-G lineup. This model features an updated Dual Core Guard structure that uses a mix of carbon fiber and stainless steel for enhanced strength and reduced weight.

The MTGB4000D-1A boasts a unique design with a laminated carbon and glass fiber sheet pattern visible from the side, creating a layered look that adds to its rugged charm. The watch also features a high-contrast layout with raised hour markers and bold hands for better readability.

Casio has refined the proportions of this watch for modern wearers, making it suitable for both men and women. It supports wrist sizes between 145 and 215 mm and offers a hybrid analog-digital layout that combines two hands with a digital screen showing time, date, and day information.

In addition to its innovative features and sleek design, the MTGB4000D-1A also boasts improved durability with a carbon core guard structure for shock resistance and 200-meter water resistance. It is powered by Tough Solar charging and supports Bluetooth connectivity for pairing with the Casio Watches app to enable automatic time adjustment, world time settings, and status checks.

Casio has also been collaborating with other brands to create limited-edition G-Shock watches. One such collaboration is with Porter, a renowned Japanese brand known for high-quality durable bags and accessories. The G-Shock POTR DW-5600 is a unique model that combines the toughness of Casio’s brand with subtle stylistic touches from Porter’s designs.

The watch features turquoise blue accents that run across the case and strap, adding a fresh and eye-catching look while still retaining classic G-Shock ruggedness. It offers shock resistance, 200-meter water resistance, and mineral glass protection, making it suitable for users who demand durability and reliability.

Casio has also launched new camouflage versions of its G-Shock 2100 Series in the UK. The lineup includes the GA-2100CM-5A and GA-2100CM-8A, both priced at £119 on the company’s official online store. These watches were first introduced in Japan in February 2026 and feature a lighter camouflage palette with beige, gray, and khaki tones applied across the resin bezel and strap.

The design also integrates a subtle G-Shock “G” motif within the camouflage pattern, making it a unique addition to the G-Shock lineup. Both watches offer a hybrid analog-digital layout that combines two hands with a digital screen showing time, date, and day information, as well as improved durability with a carbon core guard structure for shock resistance and 200-meter water resistance.

The W-221H series adopted in Japan is another example of Casio’s efforts to innovate. The new range includes the W-221H-1AJF in black and the W-221H-8AJF in light beige finish, both priced at ¥6,050 (around $38). These watches were first introduced in February 2026 and feature a retro-inspired design based on Casio’s classic 1990s digital watches.

The W-221H series adopts a square case shape with a brushed metallic bezel and a polished face, while the band connection features a flat stripe pattern to accentuate the minimalist styling. The watches measure 43.7 x 38.4 x 12.2 mm and weigh just 35 grams, making them suitable for both men and women.

The W-221H series is equipped with a resin case, resin glass, and resin band, supporting 5-bar water resistance and an LED backlight with selectable durations of 1.5 or 3 seconds. The watch features a full set of digital functions, including a 1/100-second stopwatch with 24-hour capacity, split time, auto-start, and a 5-second countdown.

The W-221H series is also packed with useful features, including world time covering 31 time zones and 48 cities, five daily alarms, an hourly chime, Flash Alert LED notifications for alarms and timers, and a full auto-calendar through 2099. Casio claims a battery life of up to 10 years and a monthly accuracy rate of ±30 seconds.

As we await the official launch of the Casio G-Shock GM-H5600, it’s clear that the brand is committed to pushing the boundaries of innovation and design. With its latest collaborations with Porter and other brands, Casio continues to solidify its position as a leader in the watchmaking industry.

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