Payloads: Actiwatch-Plus: Four Actiwatch-Plus units were connected to the HRF-1 rack for charging and data downlink. The Actiwatch-Plus is a waterproof, non-intrusive, sleep-wake activity monitor worn on the wrist of a crewmember and contains a miniature uniaxial accelerometer that produces a signal as the subject moves. The data is stored in non-volatile memory within the …

Source: ISS Daily Summary Report - 2/22/2024