Real-time blood oxygen and heart rate monitoring with AI-powered precision
The LK88 pulse oximeter gives you clinical-grade SpO₂ readings and instant low-oxygen alerts — so you can monitor your health with total confidence.
From silent worry to measurable calm
Low blood oxygen can creep up without symptoms. One moment you’re fine; the next, your body is struggling. The LK88 changes that — with professional‑grade sensors and AI that catch what the eye can’t see.
The quiet threat of undetected hypoxemia
Without regular monitoring, oxygen levels can dip dangerously low — especially during sleep, high altitude, or recovery. The LK88’s automatic alarm triggers at ≤95% SpO₂, giving you a safety net when you need it most.
Engineered for clinical accuracy you can trust
Inside, professional‑imported sensor chips work with an AI algorithm to filter out noise — just the sort of precision you’d expect from a medical device. The result? Readings you can act on without second‑guessing.
Your personal health assistant in the palm of your hand
Compact enough for your gym bag or bedside table, the LK88 slips onto a finger and reads in seconds. The OLED screen shows SpO₂, heart rate, pulse intensity, and an oxygen reserve indicator — so you always know exactly where you stand.
Three breakthroughs that set it apart
From the sensor to the screen, the LK88 was built to out‑perform generic pulse oximeters — and keep you informed.
Imported chips + AI algorithm = clinical‑grade accuracy
Unlike generic devices, the LK88 uses professional sensor chips and onboard AI to eliminate motion artifacts and environmental noise — delivering SpO₂ and heart rate numbers you can trust at home, in the gym, or while travelling.
Instant low‑oxygen alarm with sound & light
Set it and forget it. When your SpO₂ dips to ≤95%, the device flashes and beeps — so you can respond immediately, day or night. Perfect for elderly care, sleep apnea monitoring, or post‑surgery recovery.
Silicone light‑shield for consistent readings
A custom silicone cap blocks ambient light that can confuse lesser sensors — meaning accurate results whether you’re outdoors, in a bright room, or using it under a blanket.
3 seconds to your first reading
No setup, no complicated menus — just clip and know.
- 01
Insert one finger
Place your index or middle finger into the soft silicone chamber, nail facing up and fingerprint down over the sensor window.
- 02
Press the button
A short press powers on the OLED screen and starts the measurement. Keep your hand still for the next 8 seconds.
- 03
Read your numbers
SpO₂ (oxygen saturation) and heart rate appear in large digits, with a pulse intensity bar and oxygen reserve ring underneath.
- 04
Know the alarm
If your SpO₂ drops to ≤95%, the device beeps and the screen flashes — you can’t miss it. Press any button to silence.
- 05
Power off or let it auto‑sleep
After 8 seconds of no finger, the LK88 automatically powers off to save battery. For continuous monitoring, just keep a finger inserted.
The numbers that matter
Every LK88 is built to the same exacting standards — here is the proof.
Technical specifications
Every detail that went into the LK88.
- Display type
- OLED color display
- Sensor technology
- Professional imported chips with AI algorithm
- SpO₂ alarm threshold
- ≤95% with sound and light alert
- Light interference protection
- Silicone light‑shielding cap
- Power
- 2 × AAA batteries (included)
- Auto power‑off
- After 8 seconds of no signal
- Material
- Medical‑grade ABS plastic, silicone grip
- Included accessories
- Lanyard / hanging cord
Simple care for years of accurate readings
The LK88 is built to last, but a little maintenance goes a long way.
- Clean after each useWipe the silicone chamber and sensor window with a soft cloth lightly dampened with 70% isopropyl alcohol. Avoid abrasive cleaners.
- Keep dryNever immerse in water. If moisture gets inside, remove batteries and let air‑dry completely.
- Replace batteries when lowWhen the battery icon shows on the OLED, swap in two fresh AAA batteries. Remove batteries if storing for more than a month.
- Store safelyKeep in the included pouch or a clean drawer, away from direct sunlight and extreme heat.
Everything you need to start monitoring
Open the box and you’re ready to go.
- LK88 pulse oximeter unit×1Blue/white, with OLED display and silicone chamber
- Lanyard / hanging cord×1Attaches to the built-in loop for easy carrying
- AAA batteries (pre‑installed)×2Ready to use straight out of the box
- Quick‑start guide×1Illustrated instructions in English
What owners are saying
From daily check‑ins to critical moments — the LK88 is making a difference.
My dad has COPD and checking his oxygen used to mean a trip to the clinic. Now I just slip this on his finger at home. The alarm really works — it beeped when he dropped to 94% last week and we got him on oxygen right away.
I keep it by my bedside for my sleep apnea. The pulse wave graph actually helps me see how calm my heart is during the night. I’ve recommended it to my entire hiking group.
I’ve bought five of these for my elderly patients. The AI algorithm really seems to make a difference — fewer false lows compared to the drugstore brands. Worth every penny.
My dad has COPD and checking his oxygen used to mean a trip to the clinic. Now I just slip this on his finger at home. The alarm really works — it beeped when he dropped to 94% last week and we got him on oxygen right away.
I keep it by my bedside for my sleep apnea. The pulse wave graph actually helps me see how calm my heart is during the night. I’ve recommended it to my entire hiking group.
I’ve bought five of these for my elderly patients. The AI algorithm really seems to make a difference — fewer false lows compared to the drugstore brands. Worth every penny.
I’m an altitude runner and I’ve used three different pulse oximeters. This one is the only one that gives consistent readings even when I’m moving. The OLED screen is bright and easy to read on a trail.
Wanted a device that doesn’t look like hospital equipment. The blue‑and‑white design is actually sleek, and the hanging loop is handy when I take it to the gym.
The display shows more than just SpO₂ — the pulse intensity bar is very handy during my HIIT sessions. It’s a little tight on my thumb but fits my index finger perfectly.
I’m an altitude runner and I’ve used three different pulse oximeters. This one is the only one that gives consistent readings even when I’m moving. The OLED screen is bright and easy to read on a trail.
Wanted a device that doesn’t look like hospital equipment. The blue‑and‑white design is actually sleek, and the hanging loop is handy when I take it to the gym.
The display shows more than just SpO₂ — the pulse intensity bar is very handy during my HIIT sessions. It’s a little tight on my thumb but fits my index finger perfectly.
Bought it for my post‑op recovery. The numbers match what the nurse got with her professional monitor. The silicone cap is a nice touch — feels less plasticky than the cheap ones.
My daughter has asthma and checking her oxygen at night used to be a struggle. The LK88 gives a reading in seconds and the alarm means I don’t have to stare at the screen all night.
After a friend collapsed from silent hypoxia, I bought one for everyone in my family. The alarm feature is the real deal — it’s saved my peace of mind a dozen times already.
Bought it for my post‑op recovery. The numbers match what the nurse got with her professional monitor. The silicone cap is a nice touch — feels less plasticky than the cheap ones.
My daughter has asthma and checking her oxygen at night used to be a struggle. The LK88 gives a reading in seconds and the alarm means I don’t have to stare at the screen all night.
After a friend collapsed from silent hypoxia, I bought one for everyone in my family. The alarm feature is the real deal — it’s saved my peace of mind a dozen times already.
Answers to real questions
No marketing fluff — just the facts you need before you buy.
How accurate is the LK88 compared to a hospital monitor?
Can I use it on a child or an elderly person with thin fingers?
Does the alarm ever go off by mistake from movement?
Is the battery replaceable, and how long does it last?
Why should I choose this over a cheap $15 oximeter?
Can it track overnight and wake me up if my oxygen drops?
Start monitoring with medical‑grade precision today
Whether it’s for daily wellness, athletic training, or caring for a loved one — the LK88 gives you the data you need to breathe easier.