Pulsox 300-i With Finger Probe has a long-term memory up to 300hrs and long battery life up to approx 30hrs with 1 AAA battery.
Pulsox 300-i With Finger Probe by THE AFTERMARKET GROUP | Health Products For You - Pulsox 300-i With Finger Probe by THE AFTERMARKET GROUP: Pulsox 300-i With Finger Probe has a long-term memory up to 300hrs and long battery life up to approx 30hrs with 1 AAA battery....