PROBLEM TO BE SOLVED: To provide a wristwatch type bioinformation measuring device tightly attached to the wrist and surely detecting a pulse irrelevant to the tightening degree of a band to the wrist of a wearer.SOLUTION: When a wristwatch (100) having a pulse detecting portion (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 and contractible in the thickness direction of the band (2) is provided on the rear surface 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
