Come and see our amazing products. A portable, feature-rich pulse oximeter that provides spot readings of SpO2 and heart rate for the busy healthcare professional. Reads SpO2 and Pulse Rate. Accuracy: SpO2 +/-2-3% / HR +/-5 BPM. Fits fingers with a thickness of .31" to .79" (8mm to 20mm). Dual color OLED display. 2 x AAA batteries needed (not included). The oximeter is good for sports enthusiasts like mountain climbers, skiers, bikers or anyone interested in measuring their SpO2 and pulse rate. The price includes the shipping cost to CA,QTY over 10000pcs by ocean. Pls confirm further with us if any query about packing info, inventory status and time schedule.