The Casio GW-7900B-1ER is a men’s watch designed to offer an ideal combination of durability, functionality, and understated style. Its black resin case, with a diameter of 46 mm, provides a robust yet lightweight structure, while the black strap ensures comfort and durability for daily wear. The grey dial delivers a discreet and modern design, facilitating clear reading of its multiple functions. Equipped with mineral glass, it effectively protects the screen against scratches and moderate impacts, maintaining good visibility in various conditions. Key technical features include a calendar and a practical battery indicator, which helps monitor charge levels to ensure continuous and reliable operation. Additionally, it includes an alarm function, useful for setting reminders or hourly alerts. Manufactured in China and targeted at markets such as Spain, it meets standards suited to everyday needs. This model belongs to Casio’s well-known range that combines essential technologies for men seeking a durable and functional watch, suitable for daily activities as well as sports or adventure settings. Overall, the GW-7900B-1ER represents a practical and long-lasting choice within the classic watch category, featuring functions adapted to modern life.

• Functions:
  • Multifunction
  • Alarm
• Bracelet material: Resin
• Extra links: No
• Gender:
  • Unisex
  • Men
• Crystal: Mineral
• Water resistance: 20 atm
• Includes: Includes brand case or cover
• Type of movement:
  • Quartz
  • Solar
• Type of watch: Wristwatch
• Watch case diameter:
  • Ø 46 mm
  • Ø 50 mm
• Watch Case Material: Resin
• Watch case colour: Black
• Strap colour: Black
• Watch face colour: Grey
• Type: Mineral
• Material: Resin
• Characteristics:
  • Calendar
  • Battery indicator
  • Stopwatch
  • 12h / 24h format
• Batteries included: Yes

Auto-Illuminator An electro-luminescent panel causes the entire face to glow for easy reading. Auto Light automatically turns on the EL backlight when the watch is tilted towards your face for reading. Shock resistant Shock-resistant construction protects against impact and vibration. Rust resistant case All visible metal components and screws are made of titanium and are therefore resistant against rust and corrosion. Solar Power A solar cell provides power for operation. DCF/MSF/WWVB/JJY/BPC-radio signal reception Whether in Europe, North America and Japan or in the outer reaches of Canada, Central America and China – once the watch has been set to the local time, it receives the relevant signal and shows the correct time wherever you are. In many countries, it also sets itself automatically to summer and winter time. Moon data display The phase of the moon is shown on the display based on your current latitude and longitude. Tide graph display Tidal movements are displayed graphically based on your current latitude and longitude, and the lunitidal interval. World time function Displays the current time in major cities and specific areas around the world. Stopwatch function - 1/100 sec. - 24 hours Elapsed time, split time and final time are measured with 1/100-sec accuracy. The watch can measure times of up to 24 hours. Timer - 1/1 min. - 24 hours For fans of precision: the countdown timers help you to remember specific or recurring events by giving off an audible signal at a preset time. The time can be set to the nearest minute and up to 24 hours in advance. Ideal for people who need to take medicines every day or those who do interval training. 5 daily alarms The daily alarm reminds you about recurring events with an acoustic signal at the time you have set. You can also activate hourly time signal that indicates each full hour. This model has 5 independent alarms for flexible reminders of important appointments. Snooze feature Each time you stop the alarm, it sounds again after a few minutes. Button tones on/off The button tones for using the mode button can be turned off. This means that the watch no longer beeps when switching from one function to another. Preset alarm or countdown timers remain active when the button tones are deactivated. Automatic calendar Once set, the automatic calendar always displays the correct date. 12/24-hour timekeeping Times can be displayed in either a 12-hour or 24-hour format. Mineral glass The tough, scratch-resistant mineral glass protects the watch against unsightly damage. Resin case Resin band Natural resin is the ideal material for wrist straps thanks to its extremely durable and flexible properties. Battery level indicator An indicator shows the current battery level. Water resistance classification (20 bar) Perfect for free diving without scuba gear: the watch is water resistant to 20 bar / 200 metres. The metres value does not relate to a diving depth but to the air pressure used in the course of the water resistance test. (ISO 2281)

• Shockproof: Y
• Stopwatch: Y
• Calendar: Y
• Water resistant depth: 200 m
• World time function: Y
• Timer: 1/1min - 24h
• Alarm function: Y
• Snooze function: Y
• Clock mode: 12h/24h
• Radio signal receiver: DCF/MSF/WWVB/JJY/BPC
• Watch case material: Resin
• Band material: Resin
• Watch glass type: Mineral
• Battery type: CTL1616
• Battery level indicator: Y
• Solar power: Y
• Number of batteries supported: 1
• Weight: 57 g
• Dimensions (WxDxH): 46.1 x 16.4 x 51 mm