A spacesuit life support chest pack worn by Bruce Willis in the film Armageddon
The chestpack has several LEDs built in as well as a switch that regulates the fans built into...

... the backpack that ventillate the space suit helmet.

Also check out Chick Chappel's (Will Patton), Oscar Choi's (Owen Wilson)
and Lev Andropov's (Peter Stormare) life support packs from Armageddon.

Make sure to also check out our space suit costumes section.