Come and see our amazing products. Simple fingertip insert with results in under 10 seconds on a large LED display. It is the simplest and most convenient way to detect and monitor vital signs before and after any strenuous activity such as a workout at home or in the gym -- or sports such as running, cycling, basketball or tennis. People who work in aviation or travelers who fly frequently need an oximeter to know if their oxygen level is dropping so they can take steps to bring it back to normal. The price includes the shipping cost to CA, QTY over 10K by ocean, We are Glad to Receive 1 PCS order.Friendly reminding: Batteries Not Included. Pls confirm further with us if any query about packing info, inventory status and time schedule.