Hourglass sand timer The sand lasts about five minutes. The sand timer is a subtle tip for those long poops, no one should spend more than 10 minutes on the toilet at the same time for health reasons. Unique DesignRotate 360 degrees to set. Unique mechanism resets instantly without having to be held upside down. Super easy to use. Features A useful time tool for your life. The sand timer can provide an optimal time frame for work and rest, and cultivate a sense of time to increase efficiency. Fun GiftIt is a great funny gift for Valentine's Day, April Fool's Day, Father's Day, Christmas, Birthday and so on. This hourglass timer for the toilet will make the recipient laugh, just what you hope! Note This sand timer uses fine quicksand and runs for about 5 minutes, but not a precision newspaper device. If the air is very humid, the humidity can cause the sand to clump together.