The Casio Protrek PRW 6600YB-3 is a men's watch designed for sports and outdoor activities, offering a wide range of functions together with a practical and robust construction.
The Casio PRW 6600YB-3 is a model from the Pro Trek range, which is characterised by functions for outdoor use. These include a thermometer measuring from -10 to 60 °C, an altimeter up to 10 000 m, a compass and a barometer. Automatic LED illumination ensures readability in poor lighting conditions. The watch features solar power, with its rechargeable battery charged by light, radio-controlled time, a smart crown that can be pressed and then turned to select functions, and a lock that prevents accidental switching to another watch mode if the crown is pressed unintentionally.
The combined analogue and digital dial of the Casio Protrek PRW 6600YB-3 is protected by a mineral crystal. In addition to the current time, it displays the date, day of the week, stopwatch, alarm and many other functions. The watch features dual illumination: pressing a button illuminates both the analogue and digital parts of the dial. The case combines synthetic resin and steel and is complemented by a textile strap - the watch therefore weighs just 67 g and offers sufficient durability. The Casio Protrek PRW 6600YB-3 also features a fixed bezel with the names of world cities. With a case diameter of 51,5 mm, it is a larger watch. The water resistance of this model is 100 m, so it can be worn while swimming.
For more than 20 years, the Casio PRO TREK range has offered highly functional watches designed for outdoor activities. They feature innovative technology, a precise movement and a practical design. They are suitable for anyone looking for a durable sports watch in a proven design, combined with a wide range of functions. We have also written more about the Casio Pro Trek outdoor range on our blog.
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| Brand | Casio |
| Gender | Male |
| Style | Sports, Outdoor |
| Origin | Japanese |
| Guarantee | 5 years |
| Waterproof | 100 m |
| Weight | 67 g |
| Movement | Solar |
| Caliber | 5571 |
Stopwatch measurement accuracy ![]() |
1/100 sec. |
| Case size | 51,5 mm |
| Case height | 13,5 mm |
| Case shape | Round |
| Case material | Plastic |
| Case color | Black |
| Crystal material | Mineral |
| Dial | Combined |
| Dial color | Black |
| Strap material | Textile |
Buckle ![]() |
Tang Buckle |
| Strap Width | 24 mm |
| Strap color | Green |
Alarm clock ![]() |
Yes |
| Date | Yes |
Compass ![]() |
Yes |
| Backlight | Yes |
| GPS / Radio Controlled | Radio |
Stopwatch ![]() |
Yes |
Day of the week indicator ![]() |
Yes |
Power reserve indicator ![]() |
Yes |
| Functions | Date, Day of the week, Stopwatch, Compass, Alarm clock, Backlight, Radio controlled, Thermometer, Altimeter, Barometer |
Accumulator ![]() |
Yes |
Luminescence ![]() |
Hands and indexes |
| Other functions | Solar charging, Thermometer, Altimeter, Barometer, Countdown, Automatic calendar, 12/24 mode, World times, Tone button on / off |
We guarantee the accuracy of the data. Did you find a mistake? Let us know and get 8 EUR on Watch purchase.
Guarantor: Kateřina Žváček
Jiří Štencek
+420 252 252 306
Mo-Th 9-19
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info@helveti.eu
The product is included in categories
Men's best-selling watches Men's watches with stopwatch Men's Japanese watch Men's sports watches Men's watches with date Men's black watches Men's solar watches Men's watches with alarm Men's watches over 400 EUR Men's radio-controlled watches Men's outdoor watch Men's plastic watch Men's watches with altimeter Men's watches with thermometer Men’s watches Casio Pro Trek Pro Trek Men’s Watches Casio Casio Men's green watches Men's watch with mineral glass
Casio, Japan is one of the best-selling watch brands in the world. The first watches from the Casia workshop were digital and at the same time the first in the world to display the date. Casio's digital watches are no longer popular today, although analog watches or watches with a combined time display already form a large part of the range.
Casio has made history with its range of super-durable G-Shock watches, which are equipped with a light but sufficiently durable construction (against falls of up to 10 m, shocks, vibrations, magnetic field and temperature fluctuations) and a great value for money. The glory of the G-Shock watch over time also required a lightweight women's version - Baby-G. The Casio Pro Trek or Casio Edifice outdoor watches are also very popular. Casio does not lag behind in modern technology either, as evidenced by models equipped with Bluetooth technology, the Tough Solar solar drive or the high-precision radio-controlled Wave Ceptor watch.
Helveti.eu is an authorized dealer and specialist of the Casio brand.
Manufacturer information: CASIO Europe GmbH, Casio-Platz 1 D-22848 Norderstedt, Germany / info@casio.de
“This is definitely a quality product that suits my taste and needs. Aside from the color of the strap, which has a solution.”
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1 → We check, clean and set
We will check the functionality, set time, date and clean the watch carefully.
2 → We will carefully pack the watch
So that the watch does not have a chance to be damaged. We use special vacuum pads.
3 → We insure the watch against damage from the carrier
To be sure, we will insure the watch against breakage, so there is nothing to fear.
With each watch, you will receive a gift of your choice from us. Gifts are graduated according to the value of the order.
From €0 = Cleaning cloth, with which you can polish the glass of a watch.
From €100 = Stroke shortener, you can adjust the watch bracelet to your hand.
From €150 = Helveti canvas bag.
From €150 = Credit card knife.
From €170 = Donut watch case.
From €400 = Parker Jotter.
From €600 = knife Mikov 100-NH-2A blue.
From €1000 = Victorinox Waiter knife with 9 functions.
From €1400 = Watchroll for 2pcs.
From €1650 = Helveti leather watch roll.
From €2000 = Leather travel case.
From €2800 = Leatherman REV.
From €4000 = Wooden watch box Helveti.
From €6000 = Watch winder Helveti black.
And on top of that, a 5-year warranty (You can find the terms of the extended warranty here) and free shipping.
You can view the gifts here: