"You see that small yellow dimond like piece in middle, its 'mortality heart'", Mikesh and Ray loomed over the bright shining piece resting in the center of both the clocks, Kenedy proceeded to explain.
"If one of you is facing immediate danger to their life, this mortality heart will start cracking on both the clocks, very gradually but you will notice, giving time for rescue or call help."
"And if it breaks?" Asked Ray.
"That means irreversible bad news."
"Earth to Ray." Mikesh snapped his finger in front of Ray who was lost in dreamland for a while of the journey now, startling him out.
"What are you thinking? Are you alright?"
"No nothing. I am good."
"Are you thinking about the clock dimond? Don't worry about it, we have no way of testing it but I trust Kenedy and her mother."