Roscoe OTC Fingertip Pulse Oximeter with Lanyard

The Roscoe OTC Fingertip Pulse Oximeter allows you to monitor and maintain pulse and oxygen saturation levels on-the-go.Accurate and fast oxygen level and heart rate measuring technology is ideal for sports enthusiasts during strenuous activities or mountain climbing. Recommended for spot-check monitoring only. No prescription required.Product Features: Approved for over-the-counter retail sale Large easy-to-read display Soft silicone padding for a comfortable fit One-button operation Up to 30 hours of use with batteries Auto-off function Low-battery indicator Manual, lanyard and two AAA alkaline batteries included Attractive retail packaging One-year limited warranty Specifications Dimensions: - 2.25"L x 1.25" W x 1.25"H Weight: - 0.1 lb (including batteries) Display Type - LED Display Range: 0 - 99% Measurement Range: 0 - 100% Resolution: +/-2% for SpO2 Operating Temperature: 41-105°F (5~40°C) Storage Temperature:  -4 -131°F (-20~55°C) Ambient Humidity: -15%-80% in operation; < or = 93% in storage