In terms of discovering a water-resistant watch, you should know what you are searching for and a great understanding of the terminology used to explain the watch.
For instance, the Deep Blue World Timer quartz chronograph GMT watch is described as a super watch for a world ocean diver. It options what a diver would wish – a unidirectional rotating bezel with a diver’s scale. The screw-down crown at 3:00 pairs with two perform pushers to place the chronograph motion at your command. Lastly – and most significantly – are the phrases you might be searching for: Water Resistance: 50 ATM – 500 meters – 1,650 ft. These are the numbers you should see to know that this actually is a water-resistant watch – one that’s made to outlive on the prescribed depth.
When you ought to discover the phrases “water-resistant” in any product description, they need to even be said on the again of the watch case or its dial. When you could also be extra accustomed to the time period “water proof,” there isn’t any such factor as a water proof watch. water is the time period used right now.
Behind the Time period
Water resistance is said as a depth (BAR, ATM, meters or ft). It represents the truth that this model was examined in a laboratory to face up to the static pressure for a short time period, solely on the said depth. Do not forget that whenever you really use the watch, you might be placing it underneath extra water pressure than the static pressure. For instance, in the event you dive into the water, the affect on the watch is much higher when it hits the water floor than the pressure when the watch is resting in your wrist beneath the water.
Ranges of Resistance
Not marked. In case your watch is just not marked water-resistant, it is best to take it off earlier than you wash your arms, take a bathe or wash the dishes.
If the watch is marked water-resistant, however no particular numbers are given, it could stand up to an unintended splash skilled whenever you run within the rain out of your car to your house. It’s not protected to put on it when washing your arms or showering.
Whether it is labeled water to three ATM, 30 meters and 100 ft, the watch is appropriate for unintended splashes. You’ll be able to put on it to scrub up, however not whenever you go swimming.
Whether it is marked water to five ATM, 50 meters and 165 ft, you possibly can put on it whereas swimming, however not when you find yourself diving in a pool, snorkeling or partaking in water sports activities.
Whether it is marked water-resistant to 10 ATM, 100 meters and 330 ft, you possibly can put on it to swim and snorkel. However it’s not protected for diving off the excessive board or sub-water diving.
Whether it is marked water prime 20 ATM, 200 meters and 660 ft, it’s able to withstanding all high-impact water sports activities and scuba diving at depths not requiring helium gasoline.
The Customary
The water-resistant normal was set in 1990 by the Worldwide Group for Standardization – the identical group that banned the usage of the time period waterproof to explain watches. The usual spells out the testing process for every mark. It establishes pressures, check period, water temperature and different components 나토밴드.
The testing for water resistance consists of testing:
the watch’s resistance when immersed in water at a depth of 10 cm for one hour
resistance of the watch’s operative elements when immersed in 10 cm of water with a drive of 5 N for 10 minutes
Condensation check – carried out by inserting the watch on a plate heated to 40°C to 45°C for about 10 to twenty minutes; testers then place a drop of water on the glass of the watch and search for any condensation on the inside of the glass after one minute
Resistance to totally different temperatures by immersing the watch in 10 cm of water for 5 minutes at totally different temperatures
Resistance to water overpressure by immersing the watch in an appropriate pressure vessel and subjecting it inside 1 minute to the rated pressure for 10 minutes, and so on.
Resistance to air overpressure by exposing the watch to an overpressure of two bar; the watch shouldn’t present air-flow exceeding 50 µg/min
Ideas
Even water-resistant watches are usually not designed for extended lively use in water.
Some chemical compounds utilized in water can have an effect on or harm the watch seal. Equally, some perfumes and aerosol sprays can adversely have an effect on the seal. Take away your watch to keep away from contact.
Have a watchmaker check your watch’s water resistance each two years. Gaskets could have to be changed to keep up its water resistance.
Earlier than you enter the water together with your watch, ensure the crown or buttons are returned to their regular working place. A watch will lose its water resistance if the screw-down button is unlocked when the watch hits the water.
Additionally affecting water resistance are the water depth, the age of the sealing materials, the situation of the watch (has it been broken prior to now?) and the temperature.