PROBLEM TO BE SOLVED: To provide a wristwatch type bioinformation measuring instrument tightly attached to the wrist and surely detecting a pulse irrelevant to the tightening strength of a band to the wrist of a wearer.SOLUTION: The bioinformation measuring instrument, when a wristwatch 100 having a pulse detecting part P for detecting the pulse based on the pulsation of the artery near the wrist R, in a device body 1 is worn around the wrist R using the band 2, an elastic member 2e extendable in the thickness direction of the band 2 is provided in the rear side of the band 2.COPYRIGHT: (C)2010,JPO&INPIT【課題】装着者の手首へのバンドの締め付けの度合いにかかわらず、手首に密着させることができ、確実に脈拍を検出する腕時計型の生体情報測定装置を実現する。【解決手段】手首(R)付近の動脈の脈動に基づいて脈拍を検出する脈拍検出部(P)を装置本体(1)に有する腕時計(100)をバンド(2)を用いて手首(R)に装着する場合において、バンド(2)の裏面側に、バンド(2)の厚さ方向に伸縮自在な伸縮部材(2e)を設けるようにした。【選択図】図3
