The GMA‑P2100M‑2ADR (G1698) supports: World time across 31 time zones (48 cities + UTC) with DST on/off A 1/100‑second stopwatch A 24-hour countdown timer in 1-sec/1-min/1-hr increments 5 daily alarms, hourly time signal, and a mute function A full auto-calendar programmed up to 2099 A hand‑shift feature for clear view of digital display 12/24-hour format and button tone on/off... https://saicreationswatches.com/products/casio-g-shock-gma-p2100m-2adr-g1698-blue-womens-watch