Black cover hourglass timer 1/3/5/10/15/20/30/45/60 minutes

The high-quality shockproof hourglass box makes the hourglass timer durable and unbreakable. The timer comes in 6 colors. Counting time: 1 minute, 3 minutes, 5 minutes, 10 minutes, 15 minutes, 30 minutes, 45 minutes, 60 minutes. 10% deviation in time. ABS cover + glass hourglass. It will not break with normal use and can prevent falling from a height or colliding with other items. Suitable for cooking, sports, rest, children's learning and self-control.