BOAMIGO F519 Cool Men Military Watch:
- Dual Movt
Double movement, through analog and digital to display the time, combined tradition with modernity.
- 12 / 24 hours system
12 / 24 hours format for you to chose, satisfy your different preferences.
- Calendar function
With a mini window to display the complete calendar including date and day, let you know the exact time at anywhere without checking calender or mobile phone.
- Four Working Sub-dials
With four sub-dials display date, day, and digital time, convenient for know the time.
- Unique Diamond Glass Mirror Design
Special diamond glass mirror design, make your watch individual and full of characteristics.
- Chronograph function
Multinational stopwatch buttons, press the button and you can start timing, no need to use a timer.
- Water Resistance
30 meters water resistance, durable as well as practical.
- EL Backlight and Luminous pointer
- With green EL backlight and Luminous pointer display, you can check the time clearly and conveniently even in the dark condition.
- Alarm Function
When it is set, you can be waked up or reminded at any time you want. With snooze function. It will sound five minutes later, a good assistant to office workers and help you to have a reassuring unprotected sleep.
- Stainless Steel Band
Stainless steel band design with folding clasp with safety, add a little more steady and heavy to your watch. Band Length: 8.27
Band Length Unit: inch
Band Material Type: Stainless Steel
Band Width: 22mm
Case material: Alloy
Case Shape: Round
Clasp type: Folding Clasp with Safety
Dial Diameter: 1.89
Dial Diameter Unit: inch
Dial Display: Analog-Digital
Dial Window Material Type: Glass
Feature: Alarm,Back Light,Chronograph,Date,Day,Luminous
Gender: Men
Movement: Digital,Quartz
Style: Sport
Water Resistance Depth: 30m Package weight: 0.194 kg
Product Size(L x W x H): 21.00 x 5.00 x 1.50 cm / 8.27 x 1.97 x 0.59 inches
Package Size(L x W x H): 11.50 x 6.00 x 2.50 cm / 4.53 x 2.36 x 0.98 inches Package Contents: 1 x BOAMIGO F519 Dual Movt Digital Quartz Male Watch About Water-resistant Watches
Water Resistant Watches are sealed to witstand some pressure.
Water resistance is tested in measurements of atmosphere (ATM). Each ATM denotes 10 meters of static water-pressure. This is not the depth to which a watch can be worn. Many watch cases will list the basic measurement of 1 ATM as "water-resistant." These watches will withstand small splashes of water but should not be worn while washing the hands or submerging the hands in water.
Remember, water resistance is tested under static conditions. Wearing a watch which is 50 metres water resistant in water will expose the watch to a much greater pressure than during a 50 metre static test. Therefore the number of metres shown on the watch does not indicate the depth that the watch can be taken to.
Here is a general guide
50M = 5ATM = Shower Proof - it's ok to get it wet a bit.
100M = 10ATM = Extended Water Exposure good for swimming or snorkeling.
200M = 20ATM = Pressure Resistant made for Scuba and Skin Diving.
Q: A 100M watch is surely strong enough on a shallow dive?!
A: No! It isn't because it has not been high pressure sealed. 100M watches are only good for Snorkeling!
Q: What will happen if I try to dive with a watch that is less than 200M Resistant?
A: The watch's seal will be broken, it will flood and break..irrepairably.
Q: So which watch to buy?
A: Think about what you need it for and bear in mind that Scuba Watches (200M) look really cool but tend to be very heavy, which makes them uncomfortable for everyday use. 
