Pulse Oximeter ChoiceMMed MD300C21

Pulse Oximeter ChoiceMMed MD300C21

Model: MD300C21 by CHOICEMMED

Shipping Weight: 1.00 lb

Shipping Cost: International and other shipping methods are calculated at checkout.

Overnight and Special Shipping: Please call us at 281-664-1209

Price: $48.88 Standard US shipping included.

ChoiceMMed pulse oximeter MD300C21 is a compact blood oxygen meter for blood oxygen saturation level (SpO2) and heart rate. It is useful for personal use at home or medical clinics (hospitals, emergency room, doctor's office), exercise and high-altitude activities. MD300C21 is fast and can return a reading within a few seconds. It has a finger chamber for adult fingers; however with care, it can also be used for infants¹ and children¹.

Normal oxygen saturation level range at sea level is bewteen 96% and 99%. The number would be lower at high altitude as the oxygen is thinner.

A pulse oximeter has many useful applications, from general health monitoring, heart attack to hypoxia. Pulse oximeters are inexpensive and should be a standard toolkit in all household's medicine cabinet.

The ChoiceMMed oximeter MD300C21 displays the plethysmograph (pleth), which looks like a sine wave. Each wave corresponds to a heartbeat. The wave amplitude shows the amount of blood floating through the blood vessels. Low amplitude means low blood perfusion or poor blood circulation. From the heart rhythm, one can observe various heart conditions, such as missed beats, tachycardia, bigeminy...

MD300C21 can show data in six different directions. The patient does not have to read the display upside down or sideway.

md300c21 display modes

MD300C21 digital oximeter has a big bright OLED screen, which makes measurements easy to read even in the dark or adverse conditions.


  • Certifications: FDA(USA), PMDA(Japan), CMDCAS(Canada), CE
  • Infants¹, children¹ and adults
  • Dual color OLED display
  • Display pulse rate, SpO2, Bar graph, plethysmograph
  • "All-in-one" integrated finger device
  • Six display modes
  • Reliable accuracy and durability
  • Low power indicator
  • Automatic power-off in 8 seconds
  • Power: 2 AAA Alkaline batteries

Technical specifications:

  • Patient: Adult, pediatric¹, and neonatal¹
  • Display: OLED
  • SpO2:
    • Measurement range: 35-100%
    • Accuracy: 80-100% ±2%; 70-79% ±3%
    • Resolution: 1%
  • Pulse rate
    • Measurement range: 30-254 BPM
    • Accuracy: 30-100BPM ±2; 101-235BPM ±2%
    • Resolution: 1 BPM
    • Pulse strength bargraph
  • Low power indicator
  • Operation Temperature: 5°C-40°C
  • Operation relative humidity: ≤85%

¹ For patients with smaller fingers, place the fingernail right under the LED light and keep the finger still during the measurement. If not, you would get a bad reading.