Abstract: A wearable measuring system configured for determining a blood pressure of a user, including: a first measuring unit including a PPG sensor, a first voltage measuring electrode and a first current injecting electrode; and a second measuring unit including a second voltage measuring electrode and a second current injecting electrode. The first measuring unit is removably attachable to a user's body first location such that a PPG signal can be measured by a PPG sensor at the first location, and the second measuring unit is removably attachable to a user's body second location, such that an ECG and an ICG signal can be measured between the first and second locations. The wearable measuring system further includes a signal processing module configured for processing the measured ECG, ICG and PPG signals to determine a blood pressure value.