Apple Watch Is Not Compatible With Wrist Tattoos | Wall Street OTC.
“It seems that dark color tattoos, especially in red and black render incorrect information to the Apple Watch, because the red color of the tattoo will absorb the green LED light as well as the blood, and black has ability to absorb both green and red lights, and therefore further complicates the mechanism….
Despite the fact that the Apple Watch is not compatible with wrist tattoos, which imply artificially colored skin, it does not have any problems with naturally colored skin, since this is translucent and the LED lights will work just fine. “
Do other watch manufacturers use green LED too?
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