Metene Fingertip Pulse Oximeter, Blood Oxygen Saturation Monitor with Alarming Beep, Portable SpO2 Meter with Batteries and Lanyard. Perfect for DOT Medical Examiners. Brand: MeteneColor: BlackBatteries: 2 AAA batteries required (included).Batteries Included? Yes. About This Item: ABS Accurate and Reliable: MCU chip can accurately measure your blood oxygen saturation levels, heart rate and pulse strength within 8s on LED display Alarming Beeps: An alarm will be issued and oximeter LED screen will keep flashing when your SpO2 and Pulse Rate are beyond set limits Sports Enthusiasts for All Ages: Suitable for sports enthusiasts like mountain climbers, skiers, bikers, aviators, or anyone is interested in measuring their SpO2 and pulse rate before or after exercise One-Button Operation: Put your finger into the hole, press the button (keep still) and wait for 8 seconds. The pulse oximeter can monitor blood oxygen saturation You Will Get: Partyfun Pulse oximeter* 1, AAA batteries* 2, belt loop* 1, neck cord* 1, manual* 1. Furthermore, we care deeply about our customers and are always available if you have any questions or concerns.