Amazon.com: Sand Timer,XINBAOHONG Hourglass Sand Timer 3 Minutes 10 Minutes Timer Clock for Kids Games Classroom Home Office Kitchen Use (Pack of 2) (6.3''X 3.2'', 3 Min(Yellow) and 10 Min(Orange)) : Home
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Amazon.com: PROLOSO 6 Pcs Colorful Sand Timers Set Platic Sandglass Hourglass Sand Clock Timer 30sec/ 1min/ 2mins/ 3 Minutes/ 5 Minute/ 10mins for Kids Games Classroom Home Office Kitchen : Home & Kitchen