3-Methylbenzyl isobutyrate is described, as is the use thereof as an odoriferous substance, in particular for imparting a green fruity head note to an odoriferous substance mixture. The device consists of a base unit and a hand unit which are connected via a flexible, sheathed tube and wire bundle. Relief elements may ensure that temperature variations do not cause the connection between the graduated disk and the eddy-current disk to be lost.