WATERPROOF: The small pill box with keychain has a rubber ring on the screw-top lid, making it airtight and waterproof enough to keep your pills safe and dry during holidays, travel, camping, or other outdoor activities, protecting them from damage and moisture. You can portion out a 7-day supply of pills depending on the color of the pill box. Aluminum Alloy Pill Box: Our weekly pill boxes are made of high-quality aluminum alloy, which completely protects the pills inside, is rust-proof, super durable and sturdy, keeping your pills or any type of medicine safe inside. No more worries about drops or accidents during daily activities or sports. Easy to Carry: This keychain weighs only 90 grams. The pill box itself weighs only 12 grams, has a total length of 19 cm/7.5 inches, an outer diameter of 2.5 cm/1 inch, each compartment is 2 cm/0.8 inches deep, and an inner diameter of 2 cm/0.8 inches. If you want to use it as a regular pill box for daily use, it is the perfect choice for all your needs. 7 REMOVABLE COMPARTMENTS: This small pill box has 7 compartments in red, orange, yellow, green, blue, indigo, and purple. Each compartment is detachable and has threaded openings for easy opening and closing. Say goodbye to fragile transparent plastic pill boxes, no longer worry about anyone seeing your pills, protect your privacy. MULTIFUNCTIONAL USE: The travel pill box keychain can not only store your daily medications, but can also be used to carry emergency cash with you when traveling, as well as your bills, earplugs, spices, or other items you want to hide and protect. It is lightweight and can be easily attached to a belt loop, handbag, golf bag, or as a zipper pull on a coat or jacket.