There are thousands of altimeters in use by skydivers world wide, but this minty new one is mine:

Ah, my very own circle of awareness. Though it looks cool at first glance, in air it’s even better, because a light absorbent material on the face provides enough illumination for night jumps.

For those playing at home, students must pull by 5500 feet. Jumping from 10,000 feet, that’s about 25 seconds of freefall.