XHRO is the world's first and the smallest all-in-one, 24/7, real-time body monitoring device that unlocks the body clock and unveils the aging system with innovative AI technology. The user can optimize the body and cognitive performance by understanding the biological clockwork from all the data compiled into the device based on nervous, cardiovascular, and metabolic dynamics. The device looks like an earphone, effortless to put on, but a sensor behind the neck collects the vast vital data from the entire body.