Pulse Oximeter Fingertip W Lanyard Drinking Aids specs * Available in 3 HERH6036TW specs * Available in 3 attractive colors: Blue Ridge Jade and Rosewood * D578 Model features newly designed back support to provide maximum comfort * Panythose * Sun Bronze * Medium * Shoe size 9 Roscoe OTC Fingertip Pulse Oximeter Includes 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 * 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 Dimensions: 2 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