CD: http://m5.img.dxcdn.com/CDDriver/CD/sku.274688.rar Special function: To support the Andrews intelligent mobile phone / notebook computer Bluetooth connection oxygen data can be stored in device of Bluetooth connection display for future reference; Method of use: First will need a intelligent mobile phone of Bluetooth connection / notebook computer download and install additional software in CD the specific installation refer to the attached CD specification after Installation of the software open the oxygen instrument Bluetooth switch connect intelligent mobile phone/ notebook computer to the Bluetooth signal then show the related measuring oxygen data and can be stored in the display device for future reference; Parameters: Oxygen pulse; Battery: 2 x AAA alkaline batteries (not included); Range of oxygen 35~99 Degree of accuracy +/- 2 in 70-99; Pulse rate: 30~255bpm (Degree of accuracy +/- 2% 30~255bpm); Power consumption: Less than 60mA; Resolution: 1% oxygen saturation pulse rate and 1 BPM; The measurement accuracy: +/- 2% oxygen saturation in the 70%~99% stage; Oxygen saturation in the 35~69% stageno specification; The ability of resistance to interference of ambient light tolerance less than +/- 1%