The invention relates to a thumb mountable device (10) for holding equipment such as, for example, a digital music player or a heart rate receiver. The device (10) also includes in one form, a casing (14) for holding the equipment and an information display (16) for displaying information to the wearer. For example, the information display (16) may display a heart rate reading from the wearer of the device (10). The device (10) has a flexible body (12) arranged to fit over a wearer's thumb (100). The casing (14) and information display (16) are connected to the flexible body (12). The flexible body (12) flexes to allow the wearer substantially normal thumb movement when the device (10) is located on the wearer's thumb (100).
