The G1683 (DW‑5600RL‑1DR) includes: A 1/100‑second stopwatch with multiple modes A countdown timer with auto‑repeat up to 24 hours A multi‑function alarm and an hourly time signal A flash alert, plus a Super Illuminator LED backlight for clear visibility. https://saicreationswatches.com/products/casio-g-shock-dw-5600rl-1dr-digital-mens-watch-g1683