Is the GD-100 worth it at $70.98?

Yes if you want a tough, simple digital watch with a huge display. At $70.98 at Amazon as of November 3, 2026 it is close to the lowest price this model has seen, and the 7-year battery means little ongoing cost.

How big is it on the wrist?

The case is 55.0 x 51.2 x 17.4 mm and weighs 72 g, which is large even for a G-Shock. It suits wrists around 7 inches and up; smaller wrists will find it overhangs.

Yes. It is rated 200 m water resistant, which covers swimming, snorkeling and showering. It is not a dive computer and the buttons should not be pressed underwater.

Does it have Bluetooth or solar charging?

No. The GD-100 is a plain battery watch on a CR2025 cell, rated for about 7 years. If you want Bluetooth time sync or Tough Solar, look at models like the GW-M5610 instead.

The watch on its resin band, a manual and the usual Casio paperwork. No charger or extra strap is included.

G-Shock prices dip around Black Friday and back-to-school sales. The current $70.98 at Amazon is already near the low end, so waiting may save only a few dollars.