The invention relates to an electronic wrist-worn device, such as a heart rate monitor, a sportsman's watch or a diving computer, and its control method. The outside of the casing of the device comprises a bottom surface to be placed against the wrist, a top surface (304), and a side surface (308) between...http://www.google.co.uk/patents/US6745069?utm_source=gb-gplus-sharePatent US6745069 - Electronic wrist-worn device and method of controlling the same
