Casio GBX-100-1ER

Overview

The Casio GBX-100-1ER is a purpose-built sports watch for surfers and active travellers who want tide information, training data and dependable everyday durability in one highly legible package. Its broad digital display presents essential information clearly, while Bluetooth connectivity allows the watch to work with a smartphone application for selecting locations and managing relevant settings.

Designed around the demands of coastal activity, the GBX-100-1ER combines a high-definition MIP LCD with a robust resin-and-metal exterior. It can display high and low tide times and levels, moon data, sunrise and sunset times, and a tide graph, alongside training measurements such as distance, speed, pace, lap and pitch. At £150.00, it offers a compelling blend of technical capability, distinctive design and Casio reliability.

Brand and reference history

Casio has built its reputation on practical electronic watches that prioritise durability, clarity and useful functionality. From the original G-SHOCK concept to specialist outdoor and sports models, the brand has consistently developed watches for people who expect their equipment to work in demanding conditions. The GBX-100-1ER sits within that broad performance-led tradition, bringing surf-specific information to a recognisable digital format.

The GBX-100-1ER is part of the G-LIDE family, a line associated with water sports, surfing and coastal lifestyles. Its reference identity is important because this is not simply a conventional digital watch with decorative surf styling. The design and functions are organised around changing marine conditions, location-specific tide data and training support. For buyers comparing Casio watches, this model stands out as a particularly capable option for active use.

Dial, hands and design detail

There are no traditional hands on the GBX-100-1ER; instead, information is arranged across a high-definition Memory In Pixel LCD. This display technology is particularly well suited to a digital sports watch because it gives the screen a crisp, information-rich appearance while helping key readings remain easy to distinguish. The wide face provides generous room for the tide graph, moon information, high and low tide details, sunrise and sunset times and standard timekeeping indications.

The display is designed for quick interpretation rather than visual clutter. Depending on the selected mode, the wearer can access marine information or training data including distance, speed, pace, lap and pitch. The monochrome digital presentation supports the watch’s equipment-like character, while the black styling gives it an understated versatility that works beyond the beach. It is a practical alternative to more traditional dress & classic watches, particularly for a wearer who values information and resilience over formal convention.

Case, bracelet and wearability

The case combines resin and metal components to create a structure intended to cope with the knocks associated with water sports. The bezel includes a stainless steel cover with hairline and honed finishing, adding a more refined surface treatment to the otherwise technical construction. This detail gives the GBX-100-1ER a sense of elegant toughness: it looks purposeful without appearing overly utilitarian.

A resin guard structure helps protect the case from impact in multiple directions, while the button guard at the six o’clock position contributes additional protection to the operating controls. The strap is designed to complement the case’s resilient construction and to remain suitable for active wear. The overall result is a watch that can move naturally between training, travel, coastal activity and everyday casual use, with its materials chosen for function as much as appearance.

Movement and technical specification

The GBX-100-1ER uses a Casio quartz digital module rather than a mechanical movement. This is the appropriate choice for a watch built around accurate timekeeping, data display, location-based tide information and sports measurements. Quartz regulation provides the convenience expected from a modern digital sports watch, while the electronic module allows a broad range of information to be accessed from the wide MIP display.

Its principal functions include a tide graph, high and low tide times and levels, moon data, sunrise and sunset times, and training measurements covering distance, speed, pace, lap and pitch. Bluetooth connectivity enables pairing with a smartphone application, where the wearer can select from approximately 3,300 locations around the world. That location support is especially useful for surfers who travel, as the relevant marine information can be configured without relying on a small number of preset destinations.

The watch is engineered as a water-sports model, with its protective case architecture and controls intended to support use around the coast. Buyers should nevertheless follow Casio’s operating guidance, particularly when using buttons around water, and should ensure that the case, crystal and seals are in appropriate condition. As with any electronic watch, careful use and regular inspection are sensible ways to preserve long-term performance.

Sizing and how it wears

The GBX-100-1ER has a deliberately broad wrist presence, reflecting the need to display several categories of information clearly. Its wide face gives the watch a strong visual identity and makes it feel more like a piece of technical equipment than a discreet time-only accessory. On the wrist, the black finish keeps that size visually controlled, while the resin construction helps prevent the watch from feeling unnecessarily heavy.

Its wearing profile is best suited to casual, sporty and outdoor clothing. The strap and guard structure are intended to support movement, making the watch a natural choice for training, travel and beach activity. It will appeal most to buyers who enjoy a substantial digital watch, although those with particularly slender wrists may prefer to try a broad sports case before purchase. For a more compact-looking Casio design, the Casio GA-2100TL-7AER offers a different case profile and visual approach.

Collectability and market value

The GBX-100-1ER is collectible in a practical, enthusiast-led sense rather than as a scarce precious-metal watch. Its appeal comes from the clarity of its purpose, its surf-specific functionality and the way Casio combines advanced digital information with a recognisable G-LIDE design language. Models with a clear connection to a particular activity often maintain a dedicated following because their features remain useful rather than merely ornamental.

At £150.00, this example occupies an accessible point in the Casio sports-watch market. Value is determined by condition, completeness, presentation and the continued demand for the reference, rather than by precious materials or traditional mechanical complications. Its broad functionality also gives it strong everyday value: a buyer is acquiring a specialist tide and training instrument that can serve as a reliable daily watch, not simply a fashion-led digital accessory.

Authenticity, condition and servicing

Authenticity is central when buying any branded watch, including a technically sophisticated digital model. The Casio name, reference details, case construction, dial layout and function set should all correspond to the GBX-100-1ER specification. A careful inspection should consider the bezel, stainless steel finishing, display, pushers, strap, caseback and any supplied packaging or documentation. We do not add unverified serial numbers, provenance or service claims to a listing.

As a new model, this watch is presented for purchase in new condition according to the information supplied. Its quartz digital movement does not require the same servicing routine as a mechanical calibre, but it still benefits from sensible care. Battery replacement, seal inspection and water-resistance testing should be carried out by a suitably qualified professional when required. The case and strap should be rinsed and dried appropriately after exposure to salt water, and abrasive contact should be avoided to preserve the bezel’s contrasting finishes.

Buying this watch from us

The Casio GBX-100-1ER is available from us at £150.00. It is a strong choice for anyone looking for a modern Casio with genuine surf functionality, clear data presentation and a rugged construction. The tide, moon, sunrise and sunset information adds practical value, while the training measurements make the watch useful before, during and after an active session.

When choosing this reference, consider how you intend to use it. If you want location-based tide information, the smartphone application is an important part of the ownership experience; if you prefer a simple digital watch, some of its specialist capabilities may be more than you need. For the right buyer, however, the GBX-100-1ER offers a well-resolved combination of marine information, sports tracking, comfort and Casio durability at an attractive price.

We recommend reviewing the product details carefully before ordering and contacting us if you need clarification about the supplied set or the watch’s functions. Every purchase should be made with a clear understanding of the reference, condition and intended use. This model’s appeal is its honesty: it is a capable digital instrument with a distinctive coastal purpose, presented in a design that remains wearable away from the water.

Frequently asked questions

What is the Casio GBX-100-1ER designed for?

The GBX-100-1ER is designed primarily for surfers and active wearers who need tide information, moon data, sunrise and sunset times and training measurements in a durable digital watch. Its functions also make it suitable for travel, outdoor activities and everyday casual wear.

Can the watch display tide information for different locations?

Yes. The watch can work with a smartphone application that allows the wearer to select from approximately 3,300 locations around the world. This makes it useful for surfers travelling between different coastlines and for anyone who wants location-specific marine information.

What information appears on the display?

The high-definition MIP LCD can show standard timekeeping information, a tide graph, high and low tide times and levels, moon data, and sunrise and sunset times. Training functions include distance, speed, pace, lap and pitch measurements.

Does the Casio GBX-100-1ER have traditional hands?

No. It is a digital watch with an electronic MIP LCD display rather than conventional hour and minute hands. The wide screen is arranged to make the watch’s multiple information modes clear and accessible.

How is the case protected?

The case uses a resin-and-metal construction, with a stainless steel bezel cover finished with hairline and honed surfaces. A resin guard structure helps protect against impact from different directions, and a button guard at six o’clock adds further protection around the controls.

How much does this watch cost?

The Casio GBX-100-1ER is listed at £150.00. The price reflects the supplied model and the information available for this product. Please review the listing details before purchase if you require confirmation about the set or any specific accessory.