CASIO PRJB001-5D

CASIO PRO TREK PRJB001‑5D Brown Watch 

The CASIO PRO TREK PRJB001‑5D is a rugged yet stylish outdoor watch designed for adventurers and everyday explorers. Featuring a modern analog‑digital display in earthy brown tones and eco‑friendly materials, this timepiece combines durability with smart technology. Powered by Tough Solar, it charges with sunlight and indoor light for reliable, long‑lasting performance, while Bluetooth connectivity allows automatic time adjustment and easy pairing with your smartphone. With a lightweight build and robust functionality — including world time, stopwatch, countdown timer, and water resistance — this watch is ideal for trail hikes, travels, and daily wear.

Key Specifications

General

• Brand: CASIO

• Model: PRJB001‑5D (PRO TREK Series)

• Gender: Men’s Outdoor Watch

• Movement: Tough Solar (solar powered) with Bluetooth® connectivity

Case & Design

• Case Material: Resin / Bio‑based resin (eco‑friendly)

• Bezel Material: Resin / Bio‑based resin

• Case Size (L×W×H): Approx. 50.3 × 46 × 13.6 mm

• Weight: Approx. 37–44 g (lightweight)

• Rotary Guard Bezel for button protection and style

Band

• Band Material: Bio‑based resin / Cloth strap

• Compatible Band Size: 145 – 215 mm (adjustable)

Display & Glass

• Display: Analog‑Digital combination

• Glass: Mineral Glass (scratch resistant)

• Neobrite luminous hands & markers

Functions

• Bluetooth® Mobile Link – automatic time adjustment, easy settings

• Time & Place logging via smartphone app

• Phone Finder

• World Time – 38 time zones + UTC, daylight saving on/off

• Calendar – Full auto‑calendar to 2099

• Stopwatch – 1/100‑second stopwatch

• Countdown Timer

• 5 Daily Alarms & Hourly Time Signal

• Battery Level Indicator

• Power Saving (display turns off to save energy)

• 12/24‑hour format

Light

• Double LED illumination

• Super Illuminator selectable duration with afterglow

Performance

• Water Resistance: 100 metres / 10 Bar

• Environmental Resistance: Low temperature resistant (‑10 °C)

• Accuracy: ±15 seconds per month (without mobile link)