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13 Pcs Sand Timer 5.12 Inch Hourglass Timer 30 Second, 1/2/3 /5/8/10/15/20/25/30/40/60 Minutes Colorful Sand Watch for Kids Acrylic Covered Clock Sandglass Timer for Classroom, Home, Kitchen : Amazon.co.uk: Home & Kitchen
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3 Minutes 30 seconds countdown Timer - Beep at the end | Simple Timer (three min thirty sec) - YouTube
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I-MART Plastic Sand Timer Sandglass Hourglass Sand Clock Timer 30 sec/ 1 min/ 2 mins/ 3 mins/ 5 mins/ 10 mins (Pack of 6) : Amazon.co.uk: Home & Kitchen
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