Casio G-Shock GA - 100MC - 1 AER dive test

I recently went on a long overdue week long holiday with my family and decided to get myself certified as a PADI open water diver as well. I took only my Casio G-Shock GA - 100MC - 1 AER watch and decided that it would be great to actually test out whether it was really water resistant to 200M. I only found out later that 200M water resistance means that I can use it during swimming, snorkeling, jet-skiing but not while scuba diving. For scuba diving (with air tanks), you are supposed to wear watches with the words "DIVER'S WATCH 200M".

The maximum depth I went down to was around 17 meters and the watch survived the dive. Legibility was good but I realised that the lights were not very useful when using the digital timer.

The only Casio watches which are certified "DIVER'S WATCH 200M" are those in the Frogman series. The latest model is the GF-1000-1 which is now on my wish list. A few older models are available on Amazon UK.

Unlike other G-shock models which are held by 4 screws, the GF-1000-1 features a Screw Lock Back. The back and bezel are made of diamond-like carbon that resists scratching and wear.

Other features include Moon Phase Graph, Moon Age Indicator, Tide Graph (very useful), World Time and 5 alarms. It is solar powered (Tough Solar). Specifically for divers, useful functions include Dive time and surface interval measurement function. It records one set of data (dive time, dive start time, dive date) in it's memory. This watch is not meant to replace the Dive computer but as a backup.