May be used with or without child deterrent locking device. Helps you take your medicines correctly at the right time. Can be filled for one week. Each day of the week has 4 compartments. Prescribed medicines can be written on the card or the bottom of the pharmadose, or special labeling canbe affixed by a pharmacist. The pharmadose has braille markings for the visually impaired. Removeable pill tray for easy filling and cleaning. Size: 6x4x1