This massager (11) is provided with a grippable main body, at least three rotating bodies rotatably supported on the main body, and shafts respectively connecting the rotating bodies and the main body. The surfaces of at least two rotating bodies among the rotating bodies are formed by conductors. The massager (11) is equipped with a power supply device for applying a potential difference across the conductors of the two rotating bodies.按摩器(11),是具備:可把持的本體、及可旋轉地被支撐在該本體的至少3個旋轉體、及將該旋轉體及上述本體各別連繋的軸,前述旋轉體之中至少2個的旋轉體的表面是由導電體所形成。在按摩器(11)中,設有在2個旋轉體的導電體之間施加電位差的供電裝置。11‧‧‧按摩器12‧‧‧本體14‧‧‧支撐軸16‧‧‧支撐軸16‧‧‧支撐軸18‧‧‧旋轉體20‧‧‧旋轉體21‧‧‧支撐轂部22‧‧‧手把23‧‧‧支軸24‧‧‧彈簧座25‧‧‧彈簧26‧‧‧軸環27‧‧‧卡合突起28‧‧‧卡合凹部29‧‧‧凹部30‧‧‧太陽能電池板31‧‧‧電池32‧‧‧電路基板33‧‧‧供電裝置34‧‧‧電阻檢出部35‧‧‧供電控制部36‧‧‧電位差調整部37‧‧‧密封環38‧‧‧密封環121‧‧‧腳部