The present invention relates to a device (101) for measuring at least one physiological parameter of a subject, comprising (a) a fastening article for being fastened to the wrist of a first hand of the subject and (b) a measuring device (102) for measuring at least one physiological parameter of the subject, said measuring device configured to be attached to the wrist by said fastening article, said measuring device comprises (i) at least one sensor for measuring at least oxygen saturation (SpO2) in the blood of the subject (ii) a processor (103) for receiving a signal from said sensor and for converting said at least one measurement to form medical information and wherein said measuring device is configured to be attached to the wrist of a first hand of said subject and wherein said sensor is configured to be touched by a finger of said subject to perform said SpO2 measurement.
