Is the lasers used for SpO2 and to monitor your heartrate on the Fitbit devices safe?

[ahawkua]

Is the lasers used for SpO2 and to monitor your heartrate on the Fitbit devices safe especially for your eye and vision, will they cause permanent eyes and vision damage or are they actually LEDs and not lasers?

[JohnnyRow · Accepted solution]

From How do I track heart rate with my Fitbit device? 

From How do I track blood oxygen saturation (SpO2) with my Fitbit device? 

[Rich_Laue]

They are not lasers but LEDs like the ones you buy for your Christmas tree.

[emilywolton4]

Conceptual. Beat oximeters are generally utilized for harmless observing of oxygen immersion in blood vessel blood hemoglobin. We present a conveyance beat oximetry framework in view of close infrared (NIR) laser diodes (750 and 850 nm) for observing oxygen immersion of blood vessel blood haemoglobin. and Laser cutting is a strategy for cutting shapes or plans into sheet metal or other underlying materials that are essentially utilized in the assembling business, however it is likewise filling in ubiquity among different factions, like schools and specialists.

Thanks