[ High quality material ]: The small medicine box of this medicine box is made of stainless steel as a whole, with healthy materials, high hardness, light weight, mini size, and unique design that is more fashionable. No worry about any falls or collisions in daily activities or sports activities [ Size and Weight ]: medicine box 0.28 ounces (7.8 grams)/inner diameter: 7.85 millimeters (0.31 inches), total length: 53 millimeters (2.09 inches), medicine box length: 26 millimeters (1.05 inches). confirm whether this keychain medicine box is suitable for your pill purchasing. [ Waterproof and ]: The nut of the pill holder has a rubber O-ring seal, which provides sufficient air and water tightness to keep the pills inside safe and dry during vacations, travels, camping, or any outdoor activities. This small pill holder is made of high-quality aluminum alloy instead of plastic, and the travel pill container can fully protect the pills inside. Easy to carry: This pocket pill box keychain set is only 0.28 ounces (7.8 grams). The newly designed pill rack keychain allows us to easily secure it to our or belt with a keyring when we go out. This pill keychain will be a great assistant for your travel. Material: stainless steel Color: Silver Package Contents: 1 x Pill Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.