Casio Collection Watch F-91WB-1AEF

Introducing the Casio F-91WB-1AEF, the total black reinterpretation of the mythical F-91W that has conquered generations since the 1980s. In this stealth version, every element is dressed in matte black: the iconic rectangular resin case with its characteristic softened angles, the textured anti-slip resin strap, and the black crystal that conceals the LCD display until activation. Only the chrome side buttons and white inscriptions for MODE, LIGHT and ALARM break the dark uniformity, creating subtle but functional contrast.

At its heart beats the Casio module 593, a maximum efficiency digital caliber that powers the dot-matrix LCD display with highly legible digits. The main display shows hours, minutes and seconds in 12 or 24-hour format, while the top line features PM indicators, day of the week and date. Functions include stopwatch with hundredth-second precision, daily alarm with sound signal, LED backlight for night vision, and automatic calendar until year 2099.

The F-91W was born in 1989 as Casio's definitive digital watch, combining maximum functionality with minimalist design and accessible price. Its legendary robustness, battery life of up to 7 years, and featherweight 21 grams have made it a cultural icon that transcends generations. This black version maintains the original philosophy intact while adding a contemporary and stealthy touch.

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Technical Specifications

Reference: F-91WB-1AEF
Module/Caliber: 593
Type: Digital
Movement: Quartz
Water Resistance: WR (splash resistant)
Case Material: Resin
Case Color: Matte black
Strap Material: Resin
Strap Color: Textured black
Dial Color: Black with LCD
Crystal: Black resin
Light: LED
Dimensions: 35.2 x 38.2 x 8.5 mm
Weight: 21.0 g
Functions: 1/100 sec stopwatch, alarm, auto calendar, 12/24h format
Battery: CR2016 (approx. 7 years)
Made for: Unisex daily use