Environmentally friendly non-toxic ABS+PC raw materials, resistant to fall, impact, flexible, no odor, no bisphenol A, no harm to human body. Keep away from dust and moisture and keep clean. Strong corrosion resistance, does not react with acid and alkali. Press and rotate, press the white button, you can rotate by yourself without turning the cover to retrieve the item. Seven small grid just a week of dosage, can effectively prevent forgetful people eat too much or forget to take medicine.Small size, easy to carry. 3 1/2''D x 1''H