Casio

Casio Men's EF305-1AV Multifunction Analog Watch

• Quartz movement
• Protective mineral crystal protects watch from scratches
• Case diameter: 10 mm

Product Description

Amazon.com Product Description

The Casio Men's Multifunction Analog Watch #EF305-1AV features a dramatic black dial face that is protected by a durable mineral dial window. Contrasting indexes and Arabic numerals offer at-a-glance clarity, and three handy sub dials track the day, date, and 24-hour clock. A black resin band is accompanied by a sturdy buckle clasp. Other details include a 10-millimeter stainless steel case and silver-tone stationary stainless steel bezel. Highly affordable, this sophisticated timepiece sets off your look with a fresh finish. It is powered by quartz movement and is water resistant to 330 feet.

The Casio Story

With the launch of its first watch in November 1974, Casio entered the wristwatch market at a time when the watch industry had just discovered digital technology. As a company with cutting-edge electronic technology developed for pocket calculators, Casio entered this field confident that it could develop timepieces that would lead the market.

In developing its own wristwatches Casio began with the basic question, ""What is a wristwatch?"" Rather than simply making a digital version of the conventional mechanical watch, we thought that the ideal wristwatch should be something that shows all facets of time in a consistent way. Based on this, Casio was able to create a watch that displayed the precise time including the second, minute, hour, day, and month — not to mention a.m. or p.m., and the day of the week. It was the first watch in the world with a digital automatic calendar function that eliminated the need to reset the calendar due the variation in month length. Rather than using a conventional watch face and hands, a digital liquid crystal display was adopted to better show all the information. This culminated in the 1974 launch of the CASIOTRON, the world’s first digital watch with automatic calendar. The CASIOTRON won acclaim as a groundbreaking product that represented a complete departure from the conventional wristwatch.

Casio transformed the concept of the watch — from a mere timepiece to an information device for the wrist — and undertook product planning based on this innovative idea. We developed not only time functions such as global time zone watches, but also other radical new functions using Casio’s own digital technology, including calculator and dictionary functions, as well as a phonebook feature based on memory technology, and even a thermometer function using a built-in sensor. The memory-function watches became our DATA BANK product series, while the sensor watches developed into two unique Casio product lines of today: the Pathfinder series displaying altitude, atmospheric pressure, and compass readings.

In 1983, Casio launched the shock-resistant G-SHOCK watch. This product shattered the notion that a watch is a fragile piece of jewelry that needs to be handled with care, and was the result of Casio engineers taking on the challenge of creating the world’s toughest watch. Using a triple-protection design for the parts, module, and case, the G-SHOCK offered a radical new type of watch that was unaffected by strong impacts or shaking. Its practicality was immediately recognized, and its unique look, which embodied its functionality, became wildly popular, resulting in explosive sales in the early 1990s. The G-SHOCK soon adopted various new sensors, solar-powered radio-controlled technology (described below), and new materials for even better durability. By always employing the latest technology, and continuing to transcend conventional thinking about the watch, the G-SHOCK brand has become Casio’s flagship timepiece product.

Today, Casio is focusing its efforts on solar-powered radio-controlled watches: the built-in solar battery eliminates the nuisance of replacing batteries, and the radio-controlled function means users never have to reset the time. In particular, the radio-controlled function represents a revolution in time-keeping technology similar to the impact created when mechanical watches gave way to quartz technology. Through the further development of high radio-wave sensitivity, miniaturization, and improved energy efficiency, Casio continues to produce a whole range of radio-controlled models.

Product Details

• Shipping Weight: 3.2 ounces (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000GB0G1G
• Item model number: EF305-1AV
• Average Customer Review: 4.1 out of 5 stars  See all reviews (57 customer reviews)
• Amazon Best Sellers Rank: #248 in Watches (See Top 100 in Watches)
  • #83 in Watches > Sport Watches

Customer Reviews

Most Helpful Customer Reviews

18 of 19 people found the following review helpful:

4.0 out of 5 stars Excellent Work/Casual watch, April 21, 2008

By 

FallFromGrace (New York, NY) - See all my reviews

This review is from: Casio Men's EF305-1AV Multifunction Analog Watch (Watch)

This watch is an excellent every day watch for someone who wants an affordable watch that they can wear to work or to the park. With its chronograph styling, dark resin band, and classic sizing (I think it's ~38mm diameter and not too thick, though as I recently lost mine I can't be sure), it definitely will give the impression that you are wearing a much more expensive watch. When I used to wear it, I got compliments on it all the time and cost estimates in the hundreds =D.

However, don't be fooled by the "multifunction watch" title. The sub-dials show day/date/24-hour time, and that's it--no dual time, no stopwatch, it's not a digital watch replacement. The second markings aren't clear or accurate enough for you to really time anything. This was mostly fine for me but I found myself occasionally missing those functions. What I personally found most annoying, however, was the choice of mineral crystal as the watch window material, a poor compromise between acrylic and sapphire glass. Harder than acrylic, but way softer than sapphire, it still scratches fairly easily for a "beater" watch but you don't have the option of easily buffing it out.

8 of 8 people found the following review helpful:

4.0 out of 5 stars Good price, nice watch, May 14, 2008

By 

VTQuattro (Vermont) - See all my reviews

Amazon Verified Purchase

This review is from: Casio Men's EF305-1AV Multifunction Analog Watch (Watch)

I've had this watch for about a month and wear it daily to work. For the price point I feel it's well made. All hands function as they should. Time and day of the week are easy to read, but the smaller date hand can be hard to read at a glance. The band is comfortable to wear during long hours at work and it does not retain water as many link bands tend to do if you have to wash your hands frequently. The stainless steel case is attractive; a nice size for a man's watch--too soon to comment on durability but for around $30 you can't go wrong.

Follow up:

This watch served well while it lasted. After approx 2.5 years the band has broken. The watch still works fine but at this price point it's futile to pay $20 for a band and then likely a battery in the near future. I am going to try my luck with the Timex Men's T49772 Casual Diver Watch as a work watch in the clinical setting.

6 of 6 people found the following review helpful:

5.0 out of 5 stars Great Watch for its price!, July 21, 2010

By 

Frosty - See all my reviews

Amazon Verified Purchase

This review is from: Casio Men's EF305-1AV Multifunction Analog Watch (Watch)

It is a multifunction watch, but as multifunction as people think it is. It does have Date/time and a 24 hour clock, and to honest that's really all I need. I was looking for a watch that cheap and analog, and this is what I picked up. Plus, it glows in the dark. No longer need to ask what time it is, or what the date is (maybe the month and year, if you time traveled from the future).