Additional Information

Manufacturer	Casio
Model Number	GW4000D-1A
Gender	Mens
Display	Multifunction Multifunction A multifunction watch features multi sub-dials with various features; from sub-seconds dials to tide graphs.
Movement	Quartz Quartz A quartz movement, usually the most accurate type of movement, uses a battery for its power source.
Crystal	Mineral Mineral Hardened crystal or glass that gives a protective barrier. There are multiple variations but most are scratch resistant and durable.
Case Material	Titanium Titanium Titanium is an incredibly durable and lightweight metal. Scratch and dent resistant.
Case Color	Black
Case Diameter	50mm Case Diameter The full width of the watch case, all the way across from left to right. General sizing: < 20mm: A small, women's sized watch. 21mm - 30mm: A women's or small unisex sized watch. 31mm - 40mm: A large women's or unized sized watch. < 40mm: A large men's or unisex sized watch.
Case Thickness	23mm
Band Width	16mm
Band Color	Black
Band Type	Bracelet
Dial Color	Black
Warranty	Two-year
Water Resistance	200m Water Resistance 200m water resistance means this watch is suitable for diving, but not deep sea use.

• Multi-Band Atomic Timekeeping (US, UK, Germany, Japan, China)
• Receives time calibration radio signals which keep the displayed time accurate Auto receive function (up to 6 times per day/up to 5 times per day for China)
• Manual receive function
• Signal: US WWVB, UK MSF, Germany DCF77, Japan JJY40/JJY60, China BPC
• Frequency: US 60kHz, UK 60kHz, Germany 77.5kHz, Japan 40/60kHz, BPC 68.5kHz
• Tough Solar Power
• Shock Resistant
• Triple G Resistant
• Tough Movement
• Auto hand home position correction
• 200M Water Resistant
• Neo-brite luminous hands and markers
• World Time 29 times zones (29 cities + UTC), city code display, daylight saving on/off, home city/world time swapping)
• Beeper Alarm
• 1/100 second chronograph
• Measuring capacity: 00:23'59.99"
• Measuring modes: Elapsed time, split time
• Full Auto-Calendar (pre-programmed until the year 2099)
• 12/24 Hour Formats
• Accuracy: +/- 15 seconds per month (with no signal calibration)
• Storage Battery: Solar Rechargeable Battery
• Low Battery Warning
• Power Saving Function
• Approx. Battery Life: 5 months on full charge (without further exposure to light)
• Module: 5087

Casio watches are well known for the wide variety and innovation of its wristwatches. It was one of the earliest manufacturers of quartz crystal watches, both digital and analog. Casio was one of the first manufacturers of watches that could display the time in many different time zones and of watches with temperature, atmospheric-pressure, altitude, and even GPS position displays.