Come and Check Our Branding Solutions.This Fingertip Digital Oximeter Intended for sport use which is operated by 2 AAA Batteries. The device is ideal for using during high endurance and outdoor sports such as mountain climbing, running, biking. Oxygen saturation monitor shows real time Pulse Rate, Pulse Rate Bar and SpO2 level. Light Weight and easy to carry. Batteries Not Included pls noted. 100% guarantee for quality, We are GLAD to get SINGLE PIECE ORDER. Pls check inventory and detailed info before placing your orders.