# Dimensions Aesthetic design and ease-of-use have been a major focus in the development of Citadel wallet. Most hardware wallet products in the market have done a poor job in enclosure design with the assumption that aesthetics and user-friendliness is not important to crypto users. On the contrary, we have developed a mechanical design compatible with the likes of Apple smartphone and watch devices in order to bring convenience and joy while staying secure. The hardware wallet is slim and sleek, with smooth, rounded edges. It has an overall round shape and is small enough to fit comfortably in the palm of your hand. ## Mechanical Dimensions * **Thickness: 9.5mm** * **Diameter: 54 mm** --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.citadelwallet.io/wallet-spec/mechanical-spec/dimensions.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.