LEMFO S20, smartwatch with electrocardiogram monitor for less than $20

Today we put the magnifying glass on the LEMFO S20 smartwatch that for less than $20 is capable of performing electrocardiograms, a function that we only find in a few of these devices and that we can visualize through its app. We also like its circular touch screen covered with a 2.5D polished glass and its silicone strap that gives a more sporty touch to its design. In addition to its function to perform electrocardiograms, this smartwatch also includes sensors to inform us of the oxygen level in the blood, blood pressure and our heart rate, not bad for the price of this new Lemfo smart watch.

Lemfo S20 smartwatch


The LEMFO S20 Smartwatch includes a HS6620D SoC with 1MB of ROM, 4MB of RAM and Bluetooth 4.0 LE for connectivity. Its circular IPS touch screen is 1.4 inches in size with a resolution of 240 × 240 pixels, it has and its metal body has IP68 resistance to dust and splashes. The internal battery is 230mha, it is magnetically rechargeable and it will last us about a week giving it normal use. In addition to the monitoring functions of the various physical parameters that we have already discussed, it includes alarms, notifications and registration of physical activity in up to 11 sports. It is configured with the App called FunDo Pro that is available for  iOS and Android  systems where we can also change the screen design among many other things.

Price and availability

  • The LEMFO S20 smartwatch can be purchased on Aliexpress.com from just $19.99 with free shipping and is available in 3 colors.

Lemfo S20

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