Deal | Casio's outdoor-ready Pro Trek watches with ABC sensors and Tough Solar drop to record-low prices

If you’re looking for a rugged, low-maintenance watch that can survive extreme weather and charge every night, Casio's two capable outdoor watches have received steep discounts during the ongoing Amazon Prime Day sale.

Up to 44% off two feature-packed Pro Trek models

The Pro Trek PRW3510Y-8 and PRW3500T-7 are down to their lowest prices yet. For a limited time, you can snag a Pro Trek PRW3510Y-8 for just $217.50, a whopping 44% off its usual $385 price. And you can nab the PRW3500T-7 for $313.50 instead of $550 (44% off). That's a serious bargain, especially when you consider the fact that Casio’s online store lists both watches at their full price.

The Pro Trek series is built for serious outdoor use, and while it doesn't have built-in apps and smart features, it does offer advanced tracking capabilities that outdoor enthusiasts and adventurers will appreciate. The PRW3510Y and PRW3500T come equipped with Casio's Triple Sensor tech (ABC sensors), packing an altimeter, barometer, and digital compass, allowing you to monitor changing weather conditions in real-time right from your wrist.

You also get a barometric pressure tendency alarm for tracking sudden weather changes, along with 200-meter water resistance and low-temperature resistance down to 14°F.

There are a couple of differences that set the two watches apart and explain the price gap. The PRW3510Y-8 is the more affordable of the bunch and features a stainless steel and resin case paired with a silicon band and a high-contrast negative (inverted) display. It weighs just 94 grams and is the more practical choice for everyday outdoor adventures.

The PRW3500T-7, on the other hand, has a more premium build, swapping the silicon strap for a solid titanium bracelet with a one-press 3-fold clasp, giving it a more refined feel. At 128 grams, it's heavier, too, and features a standard Duplex LCD commonly seen on most Pro Treks.

Apart from these distinctions, both watches share a similar feature set. This includes a functional rotary bezel, Tough Solar charging, Multi Band 6 atomic timekeeping, world time across 31 time zones, sunrise/sunset data, world time across 31 time zones, a stopwatch, a countdown timer, and 5 daily alarms with hourly signal.

Specifications

• Case size: 56.9 × 53.4 × 14.5mm (PRW3510Y-8) / 56.9 × 53.4 × 14.8mm (PRW3500T-7)
• Weight: 94g (PRW3510Y-8) / 128g (PRW3500T-7)
• Case and bezel: Resin and stainless steel
• Band: Silicon band (PRW3510Y-8) / Solid titanium bracelet with double-lock, one-press, 3-fold clasp (PRW3500T-7)
• Display: STN LCD with negative (inverted) display (PRW3510Y-8) / Standard LCD (PRW3500T-7)
• Water resistance: 200 meters
• Low-temperature resistance: -10°C (14°F)
• Power source: Tough Solar charging
• Timekeeping: Multi Band 6 radio-controlled atomic timekeeping
• Sensors: Triple Sensor Version 3 (altimeter, barometer, digital compass, thermometer)
• Altimeter range: -700 to 10,000 m (-2,300 to 32,800 ft)
• Barometer: Pressure trend graph, pressure differential graphic, and barometric pressure tendency alarm
• Digital compass: 16-point direction measurement, bearing memory, magnetic declination correction
• Thermometer: -10°C to 60°C (14°F to 140°F)
• World time: 31 time zones (48 cities + UTC)
• Sunrise/sunset display
• Stopwatch: 1/10-second stopwatch
• Countdown timer: Up to 24 hours
• Alarms: Five daily alarms (including one snooze alarm) and hourly time signal
• Backlight: Full-auto LED Super Illuminator
• Glass: Mineral crystal
• Battery life: Up to 22 months in power-saving mode (PRW3510Y-8) / Up to 23 months in power-saving mode (PRW3500T-7)
• Accuracy: ±15 seconds per month without signal calibration

Disclaimer: Notebookcheck is not responsible for price changes carried out by retailers. The discounted price or deal mentioned in this item was available at the time of writing and may be subject to time restrictions and/or limited unit availability.