It measures blood oxygen saturation (SpO2, 0–100%) and heart rate (25–250 bpm), with an accuracy of ±2% for SpO2 and ±2 bpm for heart rate. For the most reliable reading, keep your hand still, remove nail polish, and take the reading at rest.

Under 30 seconds. Clip it onto your fingertip, press the button, and stay still until the numbers settle on screen.

It's designed for adults only. It's not intended for children, infants, or newborns, and it shouldn't be used on damaged skin, during anesthesia, in intensive care, or in emergency settings.

No. Readings are for reference only and are not a diagnostic tool. Always consult a healthcare professional to interpret unusual results or if you have health concerns.

No — the device doesn't have an alarm function and isn't built for continuous monitoring. Use it for spot-checks rather than extended wear, and avoid keeping it on the same finger for more than 2 hours at a time.

Two AAA alkaline batteries, giving roughly 15 hours of continuous use. A low-battery indicator appears on screen when it's time to replace them, and the device automatically powers off after 10 seconds without a signal to save battery.

The pulse oximeter, a wrist/neck cord, and a user manual.

63 × 34 × 30mm and 50 grams including batteries — small enough to fit in a pocket, bag, or nightstand drawer.

Wipe it with a soft cloth dampened with water, then let it air dry. If disinfecting, use 70% ethanol, 70% isopropanol, or a similar recommended disinfectant, then wipe off any residue with a water-dampened cloth. Never submerge or soak the device.

Nail polish, artificial nails, cold hands, poor circulation, movement during the test, or strong ambient light on the sensor can all affect accuracy. Make sure your finger is clean, dry, and inserted fully into the sensor, and stay still while it reads.

It's designed for an expected lifespan of 3 years with normal use.

We ship across the EU, with delivery typically within 1–2 business days.

[Confirm your exact return window here — e.g. a 14-day right of withdrawal under EU/Dutch distance-selling law.] Contact us straight away if your device arrives damaged or isn't working as expected.