- Does it need a battery change?
- No routine battery changes. Tough Solar charges from light and holds about 9 months of reserve in the dark, though it still has a rechargeable cell that can eventually be serviced.
- How accurate is it without the atomic signal?
- Casio rates it at 15 seconds per month without signal calibration. With Multi-Band 6 reception it corrects itself automatically, usually nightly.
- Can I swim with it?
- Yes. It is rated 200 m water resistant, which covers swimming and snorkeling. It is not a dive computer and the buttons should not be pressed underwater.
- What is in the box?
- The watch on its stainless steel bracelet, a manual and the usual Casio paperwork. It does not ship with a charging cable, since it charges from light.
- How does it compare with a resin G-Shock like the GW-M5610?
- It offers the same solar-atomic core in a heavier steel case with a larger digital display. The resin models are lighter and less expensive but look less dressy.
- Is this watch good value?
- Yes. It is a steel solar-atomic G-Shock at the low end of the MT-G line, and its solar-atomic core matches resin G-Shocks while the steel case and bracelet add a dressier look.
- Where is the Casio G-Shock MTGM900DA-8CR Tough Solar Atomic Stainless Steel Sport Watch cheapest?
- At Amazon, for $134.90, as of our latest check.