DUALFUNCTION: Works as a beautiful necklace charm pendant and a mini size pill box to keep your mini emergency pills. | SOLID & LIGHT WEIGHT: Made from high quality TC4 titanium alloy, high strength and durable, Ultra-lightweight, 0.2oz only, no more burden when it's attached on your necklace or keychain. | HEALTHY & WATERPROOF: Non-toxic, Hypoallergenic and waterproof, the screw-on cap with a rubber O-ring seal to keep your medications airtight moisture-free and clean. | CAPACITY: 4 standard 81mg aspirin tablets or fits 3 aspirin 81mg tablets and 3 nitroglycerin tablets. Dimension: Inner Diameter - 0.27"; Inner Depth - 0.5" NOTE: this bullet pill fob NOT good for big pills. | YOU WILL GET: 1x TI-EDC Mini titanium bullet pill holder(LIFETIME WARRANTY), 1 x stainless steel split ring, 1 x stainless steel necklace(Length:23~24"), 1 x extra O-ring.