Waterproof: Thanks to precision machining and silicone O-rings, the pill box is waterproof and protects the pill from moisture. Material: Made of high quality aluminum alloy, robust and rustproof. Perfect for on the go: diameter: 2.1 cm; Height: 7.9 cm; Weight: 36g. Free combination: The robust tube consists of three chambers and can be individually reduced in size as required. Product description A better waterproof pill box Is it too much work taking pills with you when you go out? Did you find water in the pill box while traveling? For that you need this waterproof pillbox key ring The pill box is precisely processed and there is a silicone O-ring in each compartment. No more worrying about the pill box falling into the water. Robust aluminum alloy Made of high quality materials, it will never break. Ideal for travel, camping and commuting. Easy to carry Put it in your pocket or hang it on your backpack. Free combination 3 separate compartments. You can freely combine it as required. Each subject 2 x 00 capsules 3 x 0 capsules 4 x 1 capsules