*The oximeter with respiratory rate detection supports one key adjustment of display direction, which can be adjusted up and down, which is convenient for viewing data. *The metal baking paint is more high-end, the panel shell adopts the metal baking process to show the grade; the LED high brightness display screen is also clearly visible in the dark. *All wrapped rubber anti-skid pad adopts full wrapped rubber anti-skid pad, which is comfortable to handle and not easy to fall off; high-speed computing chip is used to ensure fast and accurate calculation results. Specifications: Blood oxygen saturation measurement range: 70% ~ 99% Pulse rate measurement range: 30bpm ~ 240bpm Oxygen saturation measurement accuracy: 70% ~ 99%, within the range of ± 2%, ≤ 70% is not defined Pulse rate measurement accuracy: ± 1bpm or ± 1% of the measured value, whichever is greater Oxygen saturation resolution: oxygen saturation ± 1% Power consumption: less than 30mA Automatic shutdown: when no finger is inserted, it will shut down automatically in 8 seconds Service temperature: 5 ~ 40 Storage humidity: 15% ~ 80% working, 10% ~ 80% storage Atmospheric pressure: 70kpa ~ 106kpa Battery model: 2 * 1.5V (2 AAA alkaline, without battery) ABS + PC material Product size: 5.6 * 3 * 2.9cm Bare weight: 28g Color box size: 8.7 * 6 * 3.8cm Weight of color box after packaging: 52g (without battery) Package Included: 1 * fingertip oximeter (PE bag), 1 * hanging rope, 1 * white card lining, 1 * English user manual, 1 * color box