The clip has a simple one-button operation (short and long pressing a button). Pulse & SpO2 value are displayed fine, the display can be rotated 4 x 90 °, so that you can read the data from any position. 24-hour recording works fine, evaluation on the PC also. Latest Software's under pulox.de Note: even if the interface Mini-USB, it's a serial interface. One can read the data only with the supplied USB-Serial converter cable, not directly with a mini-USB cable. Tested on Win 7 x64
