It’s a good idea to have one of these one hand. Get this Nicwell Fingertip Pulse Oximeter for just $9.99 shipped. You’ll need to use the code W2AGO47H at checkout to get this offer (it gives you a $20 promotional credit for this particular item). Code is valid through November 15.

• ACCURATE AND RELIABLE — Pulse oximeter fingertip accurately determine your SpO2 and pulse rate in 8 seconds. The digital LED display can clearly display SpO2 and pulse rate.
• WIDE APPLICATION — Suitable for athletes and seniors who need to measure their SpO2 and pulse rate, including mountain climbers, skiers, bikers, aviators. The oximeter is intended use for check of blood oxygen saturation level for sports or aviation use.
• LARGE LED DISPLAY — Pulse Oximeter uses the most advanced LED screen. You can read SpO2 and pulse rate clearly even in strong sunlight.
• LOW POWER CONSUMPTION — Need Equipped with 2AAA batteries (not include in the package). The oximeter automatically powers off after 10 seconds of inactivity and can be operated continuously for more than 40 hours.
• PORTABLE and LIGHTWEIGHT — Each oximeter weight is only 50g and comes with a neck lanyard, so you can use the portable oxygen sensor at any time. Note: Not included 2 AAA batteries.

Please remember prices may change.

Thanks, H2S!