It measures oxygen saturation (SpO₂) and pulse rate (PR) via a fingertip sensor, showing the results on an LCD display.

It is suitable for adults and children over 4 years old (weighing 15–110 kg). Not suitable for infants or newborns.

No. It is designed for monitoring only, not treatment or life-supporting functions.

Avoid using it on the same finger for more than 2 hours, especially for people with poor circulation.

No. Nail polish, artificial nails, or long nails can block the sensor and cause inaccurate readings.

Insert two AAA batteries following the correct polarity. Replace the cover before use.

• Insert two AAA batteries.
• Open the clip and insert your finger (nail facing the display).
• Press the power button once.
• Remain still until readings stabilize.
• The device auto shuts off after 5 seconds with no signal.

• SpO₂ (%)
• PR (bpm)
• Pulse waveform
• Bar graph intensity
• Low battery indicator

Yes. When powered on, press and hold the button to adjust brightness.

The LOOKEE Deluxe Pulse Oximeter (LK50D1A) features an auto-rotating display, which automatically adjusts the screen orientation depending on how you hold the device.

Parameter

• SpO₂
• Pulse Rate

Range

• 0–100%
• 30–250 bpm

Accuracy

• ±2% (70–100%),
• ±2 bpm or ±2% (whichever is greater)

• Improper finger placement
• Motion or shaking
• Cold fingers / poor circulation • Strong ambient light
• Nail polish or artificial nails
• Certain medications (e.g., dyes or vasoconstrictors)

• Wipe surface with medical alcohol and dry with a clean cloth.
• Do not use high-pressure steam or immerse in liquids.
• Remove batteries if storing long-term.

No, the LOOKEE Deluxe Pulse Oximeter (LK50D1A) does not have an alarm feature.

It is designed primarily for spot checking and short-term monitoring, showing your SpO₂, pulse rate, and pulse waveform on the display.

If you need a device with an audio/visual alarm that alerts you when your oxygen level or heart rate goes above or below preset thresholds, we recommend the LOOKEE A310 model, which includes this alarm function.

Possible Cause:

Your finger may not be positioned properly, or your SpO₂ level may be too low to detect.

Solution:

Reinsert your finger fully and try again. If the issue persists, consult your physician to ensure proper circulation and oxygen level.

Possible Cause:

The finger may be moving or not inserted deep enough into the sensor clip.

Solution:

Keep your finger still and properly inserted during measurement. Avoid shaking or movement for the most accurate readings.

Possible Cause:

The batteries may be dead, incorrectly installed, or there could be an internal device fault.

Solution:

Replace or reinstall the batteries correctly. If the device still does not power on, contact customer support at support@LookeeTech.com