The G-SHOCK x Crocs Echo Wave, model GA2100CROCS25-7, is a limited collaboration bundle that pairs a watch with a specially designed clog. Casio says the watch case detaches from its wrist band and fits into the clog’s rivet system, so it can be worn on the wrist or attached to the shoe. Casio announced a U.S. launch price of $200 in 2025; Crocs’ U.S. product page currently shows the collaboration as sold out.
What is the G-SHOCK x Crocs Echo Wave?
It is a collaboration bundle, not a standard Echo Wave clog accessorized with a generic watch charm. Casio identifies it by model number GA2100CROCS25-7 and describes a removable watch case designed to transfer between the included wrist band and the clog’s rivet system. Casio’s product page presents the watch and footwear as one product.
Casio describes the collaboration Echo Wave as glow-in-the-dark and says it has a custom marbled ankle strap, removable watch bands, special case-back engraving and special packaging. The available product information does not establish how bright the material glows or how long it remains visible.
How does the watch attach to the clog?
The watch case can be removed from its wrist strap and snapped into the clog’s rivet system, according to Casio. That makes the watch module transferable between footwear and wrist wear rather than a fixed decorative element. Casio describes the design as a way to wear the timepiece either on the wrist or integrated into the footwear; the product page does not provide further instructions about the attachment process.
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- Item Trademark: CASIO
- Style: strap
- Manufacturer: CASIO
- Manufacturer: CASIO
What does the watch do?
Casio lists these specifications for the watch. They are manufacturer-published features, not results of independent testing.
- Shock-resistant construction
- 200-meter water resistance
- World time covering 48 cities and 31 time zones
- 1/100-second stopwatch
- Countdown timer
- Five daily alarms
- Double LED light with Super Illuminator
See Casio’s G-SHOCK x Crocs product details for the full manufacturer specification list.
Rank #2
- From Casio, this rugged G-Shock Carbon Core Guard Analog-Digital watch will toughen up your collection
- The case is made of fine resin embedded with carbon fibers, making the thin, lightweight, and simple design configuration of this model possible
Launch price and availability
Casio America announced a U.S. retail price of $200 and a sales start date of May 27, 2025, through Crocs.com and select wholesale partners. That is the announced original U.S. launch price, not a statement of the watch’s current price. Casio America’s May 13, 2025 announcement gives those launch details.
Crocs’ U.S. collaboration listing currently displays “sold out.” That status applies to the page as shown, and does not establish availability at every retailer, in other regions or on resale marketplaces. No current resale value is established here.
Rank #3
How it differs from the standard Echo Wave
The regular Echo Wave is a separate Crocs product, SKU 210521. Its product page describes a roomy fit and recommends sizing down, and lists a sculpted upper and outsole, medial and lateral ventilation holes, and a LiteRide footbed. Those fit and construction notes refer to the standard model; they do not confirm that every detail applies unchanged to the collaboration bundle. Crocs’ standard Echo Wave page is useful for that model only.
Quick Recap
Best Value
- Metal-clad daring meets sophisticated gleam in this Casio G-Shock that delivers Smartphone Link via Bluetooth(R) and Tough Solar charging system, all in a meticulously finished metal design with iconic octagonal bezel
- This model features a blue metallic vapor deposition dial that is complemented by a black band made of environmentally responsible bio-based resin
Rank #4
- Rugged & Sporty Design – Matte black finish with bold digital display, built for tactical, military, and extreme sports enthusiasts.
- High-Brightness LED Backlight – Features Super Illuminator LED with a light guide plate, ensuring exceptional visibility in low-light conditions.
- 200M Water Resistance – Engineered for swimming, snorkeling, and outdoor adventures, this shock-resistant watch is ready for action.
- Extended 7-Year Battery Life – Powered by a CR2025 battery, offering years of reliable performance without frequent replacements.
- Shock-Resistant Structure – Built to withstand extreme conditions, making it ideal for sports, military, and rugged outdoor use.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
