Rannekello Casio GA-100-1A1ER miesten kvartsi musta

The Casio GA-100-1A1ER is a male quartz wrist watch with a black resin case designed for everyday wear and active lifestyles. Its robust construction combines analog and digital displays in a large 51.2 mm case, providing clear time reading and multiple functions while maintaining a sleek, all-black look. The watch is powered by a CR1220 cell offering approximately two years of battery life, and the case thickness and overall dimensions are intended to balance presence on the wrist with practical comfort.

Advantages

The watch offers a combination of analog hands and a digital module for precise timekeeping and useful additional functions. The black resin case and strap provide impact resistance and lightweight comfort. The generous case diameter enhances legibility, and the quartz movement ensures stable accuracy with minimal maintenance. The two-year battery life reduces the need for frequent replacements, and the overall design is resistant to daily wear.

Suitable for

Key specifications

How to use

Set time and date using the crown and push-buttons according to the included user manual: use the crown or mode button to switch between functions and adjust hours, minutes, and calendar settings. The digital module provides access to secondary features such as stopwatch, alarm and world time; operate these functions with the push-buttons surrounding the case. Regularly check the seals and strap for wear, and replace the battery when the digital display or accuracy indicates reduced power.

Recommendations

For daily maintenance, avoid exposing the watch to strong chemicals, prolonged hot water or extreme magnetic fields. Clean the resin case and strap with a soft cloth and mild soap solution when needed. Have battery replacement and water resistance checks performed by qualified service to maintain functional reliability.