YOUNAFEN Sand Timer Hourglass 3/5/15/30 Minutes Sand Clock Timers for Children Tooth Brushing Cooking Game Home School Sand Hourglass Timer

YOUNAFEN

Hourglass is very effective visual cue that help to improve attention and management. The bright colored sand floats down, and is used for furnishing home decorations and gifts. 4 different color and hourglass sand timer for choose, with borosilicate glass, and waterproof. Suitable for regular cooking, game, children brushing teeth, sports, schools, Notice: This sand timer is not precision-timing device, so there is time-deviation.