Casio ProTrek PRJ-B001EX-1 with Band’s Storage Compartment

August 4, 2026
3 minutes read

Casio engineered the ProTrek PRJ-B001EX-1 for outdoor enthusiasts and dedicated campers. The concept centers on practical portability during wilderness trips and campsite activities.

Designers studied real campsite habits to solve everyday convenience challenges. Hikers often need quick access to small cash for firewood, local markets, or vending machines. 

Casio ProTrek PRJ-B001EX-1
Casio ProTrek PRJ-B001EX-1

Leaving wallets in vehicles creates minor hassles during short trail breaks. Casio inspired this model by transforming the watch band into an accessible pouch. The result connects nature exploration with clever functional convenience.

Specification

The watch presents a modern octagonal case design with bold geometric angles. Casio integrates its signature rotary guard bezel into the exterior structure. 

You can turn the rotating bezel 45 degrees to change the watch layout. In the default position, the bezel covers the side pushers. 

This protective barrier prevents accidental button presses during active movement. Turning the bezel uncovers the pushers for immediate access during hikes. 

The design delivers a seamless transition between rugged trails and urban streets.

Detailed case specifications highlight the balanced physical profile of this timepiece. The case diameter measures 46mm across. 

The case thickness measures a compact 13.6mm. The overall lug-to-lug length reaches 50.3mm, and the total watch weight equals approximately 51 grams. 

Casio ProTrek PRJ-B001EX-1
Casio ProTrek PRJ-B001EX-1 to store coins

A sloping case back prevents wrist interference during hand movements. The watch provides an official 100-meter water resistance rating. 

You can safely wear the watch while swimming, rafting, or kayaking. Low-temperature resistance protects watch functions down to -10℃.

A solid stainless steel caseback secures internal components tightly. Environmental responsibility remains a central focus of this design. 

Casio equips this model with a specialized cloth strap. The unique reversible band transforms into a secure storage compartment. 

You can store physical coins, paper cash, or small keys inside the pocket. The zipped band also wraps around the case to provide protective coverage. 

You also can detach the watch and clip it onto a carabiner. This feature allows campers to hang the watch inside tents or on backpacks. 

Dial

Casio ProTrek PRJ-B001EX-1
Casio ProTrek PRJ-B001EX-1 dial

The dial features a dark black color scheme. A subtle matte texture covers the main dial surface. This non-reflective finish suppresses glare under bright sunlight. 

High-contrast white hands and hour markers sit above the dark background. Neobrite luminous coating enhances visibility in dark outdoor environments. 

An analog-digital layout combines physical hands with a clear digital screen. Tough mineral glass covers the dial assembly. This durable glass protects internal components against scratches and impacts.

Movement and Features

An advanced Casio solar quartz movement powers all timekeeping functions. Tough Solar technology converts natural and artificial light into electric energy. 

The rechargeable battery operates for seven months without additional light exposure. Power saving mode extends battery life up to eighteen months in total darkness. 

Built-in Bluetooth technology enables wireless linking to smartphones. The CASIO WATCHES app automatically corrects timekeeping four times each day.

The watch includes world time functionality covering 38 time zones, 1/100-second stopwatch, a60-minute countdown timer, five daily alarms, a hand shift, Double Super Illuminator LED, time and place feature logs current coordinates onto smartphone maps.

The Casio ProTrek PRJ-B001EX-1 redefines practical outdoor timepieces. It combines versatile strap storage with reliable solar timekeeping. 

Adventurers gain a durable instrument built for mountain trails and city streets. The watch meets the needs of active hikers and casual explorers alike.

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