5.38" overall. 3 5/8" closed. 5 3/8" overall with fire starter assembled. Black anodized aluminum construction with survival tips printed on the outside of capsule. Waterproof. Features a 20mm Grade A button compass on one end with holes for a lanyard and IR (Infrared) reflective tape (Glint Tape) on the other. The compass can also be unscrewed to be stored inside the capsule with the Visible Light Reflective Tape showing on the outside. To assemble the 1 1/2" ferro rod attachment, unscrew one of the extra thread protector rings and then the ferro rod (that is tucked inside capsule). Assemble back together to expose the ferro rod. Capsule can also be used to store small survival items. Modular Design: Additional capsules can be screwed together (extra modules not included). Also includes an ESEE survival card, extra thread protectors rings and an OD green nylon lanyard. Bulk packed.