Amazon.com: 10 ATM 100m Waterproof Digital Sports Watch for 。Laser sharp sport watch with classic digital function and durable resin construction. Condition: Brand new 1. Features ? 50-meter water resistance – Suitable for swimming and snorkeling ? LED backlight with afterglow – Easy reading in the dark ? Flash alert – Flashes with buzzer for alarms and hourly signal ⏱ 1/100-second stopwatch – Accurate timing for workouts ? Countdown timer & multi-function alarm – Versatile daily use ? Full auto-calendar until 2039 – Never needs manual date adjustment fast shipping, smoke-free home, bundle & save QjA4U1NaNzk3UQ==