Wearable tags consisting primarily of electronic infrared sensors for exchanging information between players of a game

Bracelets; Chronographs as watches; Chronometers; Clocks; Horological and chronometric instruments; Jewellery; Jewellery boxes; Presentation boxes for watches; Straps for wristwatches; Timepieces; Watch bands; Watch straps; Watches; Wristwatches