To take full advantage of the product, you will need the following: the Nox Abdomen Cable (7078982), the Nonin WristOx2 Pulse Oximeter – Model 3150 BLE (7078989), a USB cable Type-C to connect the device to the computer and the Bluetooth BLE 5.0 USB dongle (7079467) enabling A1s communication to the Nox C1. These accessories are included in the Nox A1s system package (7079465) except the Bluetooth USB dongle that you can find as a spare part (7079467). Nox RIP belts and nasal cannulas are still compatible with Nox A1s.