Portable wirstband instrument having electrical connection means

A battery inside a wristwatch or similar instrument is recharged through two different diameter recessed charger contacts (10,11) built into the watch strap (4) adjacent to the buckle (14). The contacts are connected to the battery by flexible conducting tracks (8,9) which run longitudinally along the strap to the watch case and are protected by the buckle loop (15) and locating tags (13)