Casio B640WB-1A

Casio B640WB-1A Digital Watch with Black Steel Bracelet

Imagine: a business meeting, a workout, or an ordinary rainy day - and on your wrist is a watch that matches everything without compromise. The Casio B640WB-1A is built on the same idea as the classic "office" Casio models from the 1980s, but with a contemporary black finish on the case, bezel, and bracelet. This is not just retro aesthetics - it's a specific model with a specific character.

Appearance: a unified black tone from case to bracelet

The rectangular case with rounded corners is made of steel and painted in black with a matte-glossy finish. The chain-link bracelet with rectangular links maintains the same tone - no contrast, pure metallic shine. The bezel features duplicated button function labels: LIGHT, MODE, START/STOP, ADJUST - convenient once you get used to the controls. The LCD display with a gray background clearly shows the time, day of the week, AM/PM indicator, and active alarm and stopwatch icons. The model weighs 45 g, so it's barely noticeable on the wrist.

Water Resistance: wear it in the rain and in the pool

The bezel clearly states "WATER RESIST 5BAR", which corresponds to 50 meters of water resistance. This means: rain, washing, swimming in a pool - without limitations. The model is not designed for scuba diving, but for most everyday and sports situations, this level of protection is sufficient.

Features: electroluminescent backlight and alarm

• Electroluminescent backlight (Illuminator) - illuminates the entire display, not just individual segments, which is convenient in the dark
• Alarm - adjustable, alarm time is displayed on the screen (in the example in the photo - 6:30)
• Stopwatch - icon is active on the display, controlled by the START/STOP button
• Display - hours, minutes, seconds, day of the week, AM/PM
• Quartz movement by Japanese manufacturer Casio
• Case and bracelet material - steel with black coating
• Water resistance - 5 BAR (50 m)
• Weight - 45 g
• Warranty - 24 months
• Packaging - black metal box with Casio logo