Brief introduction


CMS50M Pulse Oximeter is a portable equipment adopting advanced technology, it mainly checks SpO2 and PR value through the finger, which provides advanced, non-invasive and scientific means for quantitative measurement of oxygen saturation. 

CMS50M Pulse Oximeter is applicable for use in plateau area, community healthcare, oxygen bar, Fitness clubs, physical training room, family and medical institution, etc. 


1) Can measure SpO2 and Pulse Rate accurately

2) SpO2 and Pulse Rate display,bar graph display 

3) Battery voltage low indication

4) Shut off automatically when no signal


SpO2 measurement range: 0%~100%

Accuracy: 70%~100%: ±2%

 0%~69%: unspecified

PR measurement range: 30bpm~250bpm

Accuracy: ±2bpm or ±2%, whichever is greater.


SpO2: 1% 

PR: 1bpm

Measurement Performance in Weak Filling Condition: SpO2 and pulse rate can be shown correctly when pulse-filling ratio is 0.4%. SpO2 error is ±4%, pulse rate error is ±2 bpm or ±2%, whichever is greater.

Resistance to surrounding light: The deviation between the value measured in the condition 

of man-made light or indoor natural light and that of darkroom is less than ±1%.

Working current: ≤25mA

Power supply: two “AAA” batteries

Safety classification: type BF applied part

4.Physical characteristic

Dimension: 57mm(L) × 34mm(W) × 31mm(H)

Sell in standard
◆ a hanging rope
 a pouch

◆ a user manual


* We accept payment from PAYPAL, Bank transfer. 

* All payments are expected within 7 days after the last winning auction is closed.


1. We will ship the item within 2 days after receiving your payment.To US buyer,Ship from USA warehouse by USPS 2-6 working days delivery.To other country buyer,ship from China warehouse by China Post 2-4 weeks Arrival.

2. All items will be shipped to buy's ebay address. Please check your ebay address  is right.

3.The item will be declared as lower value for shipping only.We'd like to cooperate with you and declare the value of  it as you want us to,so that it is easier for you to clear the custom.

International Buyers - Please Note:

 * Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility.

* Please check with your country customs office to determine what additional costs will be prior to bidding

Terms of Sale

We offer 60 days return policy. 100% satisfaction is our goal!
1.All items are brand new ,with 1 year warranty.              
2.If you have a defective item, you want to return or discount. Please contact us within 2 days from you receive the shipment. 
3.We will refund the money to you when we get the return items or replace item for you.
4. All return items must be returned with it's original packaging and accessories. Customer is responsible for shipping charges on returned items.

please leave me a positive feedback if you are satisfied with our products, thanks!
I will appreciate your positive feedback so much,and in any case or some problem with the products, please contact us before leaving Neutral OR Negative Feedback. I am sure I will give you a satisfied answer, thank you.

Buy safe products
The following FDA Disclaimer is required for all eBay listing in Healthcare category and is included for REFERENCE: The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If the item is subject to FDA regulation, we will verify your status as an authorized purchaser of this item before shipping of the item.
The Fingertip Pulse Oximeter is registered on the Australian Register of Therapeutic Goods (ARTG)with the code 197923, and certified by FDA of United States and CE,TUV of Europe. The  Fingertip Pulse Oximeter that is FDA 510K Approved

About Us

CONTEC Medical System-----Focusing on research, manufacture and distribution of medical equipment,

CONTEC Medical System was founded in 1992 as a professional medical equipment producer.

At present,there are more than 1200 employees in our company .Our product lines cover a wide range of 13 categories,and have been distributed over 30 countries.

We are the manufacture of medical equipment for more than 20 years, main products include ECG machine,

Patient monitor,EEG machine,pulse oximeter,Fetal doppler,Blood pressure monitor and so on..

Contact Us

We are Professional Manufacturer--CONTEC MEDICAL SYSTEMS CO.,LTD
Looking forward to establishing a successful business relationship with you.
Contact Person:Vivian Zhang
Mobile/WhatsApp/WeChat: +8618617816016
Skype: ContecVivian
Address(CN): NO.112 Qinhuang West Avenue,E&T Development zone,Qinhuangdao,China