G-Shock real or fake: how to spot - How to set time on Q&Q Alarm function mode - How to set analog time on G-Shock AW-590 - In this video we consider casio f-91w how to set time, how to set hours, minutes, month, date, time format 12/24H, day of the week. Also we consider how to turn on and turn off the alarm, how to change the time on a casio alarm chrono watch. Casio f-91w water resistance 30m=3atm=3bar. There are many videos casio f-91w water test, but these watches are protected from falling rain, snow. They can wash your hands.

More Casio F-91w Manual images. The Casio F 91W Manual: a classic digital sports watch which is loved by millions of users. In this article I am going to tell you why you should have one.

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How to turn on/off beep on Casio - F-91W Casio F-91W manual module 593 - If you don't know how to change the date on a casio digital watch, then this video will help to understand this.

A Casio F-91W-1 watch with a plastic case and resin Manufacturer Type Display Introduced 1991 The Casio F-91W is a model, manufactured by the Japanese company It is a part of the of digital watches. The original F-91W was introduced in 1991 and is still in production and demand. It is popular for its simplicity, reliability, and unpretentious, clean design. Its design has not changed since it was first brought out over 20 years ago.

The watch is available in several variants. Casio does not release sales figures for the model, but admits it continues to sell 'well'. Contents • • • • • • • • • Specifications [ ] The F-91W has a ​ 1⁄ 100 second with a count up to 59:59.99 (nearly one hour). Marking net and split time (lap) is also featured. There are the options of an hourly time beep and a single daily alarm lasting 20 seconds. It has an automatic calendar, although auto-adjustment for is not supported, as the watch does not record the year.

February is always counted as 28 days. The watch uses a faint, green backlight located to the left of the display for illumination. The watch is reported to be accurate to ±30 seconds per month by Casio. The watch is powered by a single 3-volt lithium button cell, which lasts at least seven years, assuming 20 seconds of alarm and one second of light usage per day. However, these are seldom used in practice, so it is not uncommon for the battery to last 10 years or longer. The watch case measures 37.5 by 33.5 by 8.5 millimetres (1.48 by 1.32 by 0.33 in) and weighs 21 grams (0.74 oz).

The manufacturer's module number for this model (stamped on the stainless steel rear of the watch case) is 593. The strap is 18mm at the fitting and 22mm across the widest part of the lugs. Water resistance [ ] The watch has a reliable rubber seal between its steel back and case, but does not have any seals for its buttons. Since they fit tight enough, surface tension prevents the water from getting inside, but only to a certain point of water pressure. Therefore, the watch front is marked, but Casio reports different values for different variants of the watch. The black version (F91W-1) is '30 meter / 3 bar', the ISO standard meaning of which is: 'Suitable for everyday use.

Splash/rain resistant. NOT suitable for showering, bathing, swimming, snorkeling, water related work and fishing', but the colored versions (e.g. F-91WC-2AEF) are 'DIN 8310 / - resistant to minor splashing'. Even though the black version will resist an occasional water submersion if the buttons are not pressed, the watch should not be used in such conditions on a regular basis.

Durability [ ] The watch is known to be very durable, people have bought the watch to use in a variety of situations: such as outdoors activities, working as a mechanic, doing construction jobs, or as a soldier. The body of the watch is known for lasting longer than the 10 year battery life. The watch will also outlast the plastic strap that it comes with. Casio replacement straps are typically about the same price as a new F91W watch, so people usually buy cheaper knock-off F91W's online from websites such as AliExpress and harvest the straps from those watches to do a strap replacement when the time comes. Operation [ ]. Casio F-91W, in daily alarm mode and using the 24-hour display option. The watch is currently set to sound its daily alarm at 7:30 a.m., but hourly beeps are disabled.

The watch is controlled by three side-mounted push-buttons. The upper left button turns on the backlight, cancels the alarm, resets the stopwatch or marks the split (lap) time, and is used for selecting settings. The lower left button cycles the modes of the watch: time display, alarm, stopwatch, and time/date adjustment.