A wearable camera includes a casing that hoses an imaging unit and includes a front surface in which a lens is exposed, and a rear surface in a direction along a vertical surface serving as a surface on a mounting side, an attachment surface that is formed on the rear surface and on which a casing holding member is detachably attached without screwing, and a protrusion that comes in contact with a magnet protruding from the casing near an upper end of the attachment surface and attached to the attachment surface to restrict downward movement of the casing with respect to the magnet.