macaron creative sand clock timer children student learning time management 5/10/30 minutes quicksand bottle

3 to 30 minutes (note time) plastic type(3到30分钟（备注时间）塑料款) 3 minutes sky blue (glass)(3分钟天空蓝（玻璃款）) 3 minutes macaron pink (glass)(3分钟马卡龙粉（玻璃款）) 3 minutes mint green (glass)(3分钟薄荷绿（玻璃款）) 3 minutes romantic purple (glass)(3分钟浪漫紫（玻璃款）) 5 minutes sky blue (glass)(5分钟天空蓝（玻璃款）) 5 minutes macaron pink (glass)(5分钟马卡龙粉（玻璃款）) 5 minutes mint green (glass)(5分钟薄荷绿（玻璃款）) 5 minutes romantic purple (glass)(5分钟浪漫紫（玻璃款）) 10 minutes sky blue (glass)(10分钟天空蓝（玻璃款）) 10 minutes macaron pink (glass)(10分钟马卡龙粉（玻璃款）) 10 minutes mint green (glass)(10分钟薄荷绿（玻璃款）) 10 minutes romantic purple (glass)(10分钟浪漫紫（玻璃款）) 15 minutes sky blue (glass)(15分钟天空蓝（玻璃款）) 15 minutes macaron pink (glass)(15分钟马卡龙粉（玻璃款）) 15 minutes mint green (glass)(15分钟薄荷绿（玻璃款）) 15 minutes romantic purple (glass)(15分钟浪漫紫（玻璃款）) 20 minutes sky blue (glass)(20分钟天空蓝（玻璃款）) 20 minutes macaron pink (glass)(20分钟马卡龙粉（玻璃款）) 20 minutes mint green (glass)(20分钟薄荷绿（玻璃款）) 20 minutes romantic purple (glass)(20分钟浪漫紫（玻璃款）) 30 minutes sky blue (glass)(30分钟天空蓝（玻璃款）) 30 minutes macaron pink (glass)(30分钟马卡龙粉（玻璃款）) 30 minutes mint green (glass)(30分钟薄荷绿（玻璃款）) 30 minutes romantic purple (glass)(30分钟浪漫紫（玻璃款）) 45 minutes sky blue (glass)(45分钟天空蓝（玻璃款）) 45 minutes macaron pink (glass)(45分钟马卡龙粉（玻璃款）) 45 minutes mint green (glass)(45分钟薄荷绿（玻璃款）) 45 minutes romantic purple (glass)(45分钟浪漫紫（玻璃款）) 60 minutes sky blue (glass)(60分钟天空蓝（玻璃款）) 60 minutes macaron pink (glass)(60分钟马卡龙粉（玻璃款）) 60 minutes mint green (glass)(60分钟薄荷绿（玻璃款）) 60 minutes romantic purple (glass)(60分钟浪漫紫（玻璃款）)

custom color(定制颜色)