Resistance when immersed in water at a depth of 10 cm. Immersion of the watch in 10 cm of water for 1 hour. Immersion of the watch in 10 cm of water with a force of 5 N perpendicular to the pusher buttons for 10 minutes.
https://www.amazon.com/Casio-F91W-1-Classic-Resin-Digital/dp/B000GAWSDG

