Flashbomb and Glasses upgrade (Invention)

The RP for both objects can be found HERE.

Glasses upgrade:
Increased photo sensitivity of the Bio-leech glasses' vision field. With a rapid change in lighting (bright) the bio-leech shifts the glasses into dark shades to prevent blindness. The same effect with a rise in temperature, unfortunately this also is effected by the body heat.

Flash grenade - It's a simple device that causes a bright flash of light. The flash of light momentarily activates all light sensitive cells in the eye, making vision impossible for approximately five seconds until the eye restores itself to its normal, unstimulated state. The extremely loud blast produced by the grenade adds to its incapacitating properties by disturbing the fluid in the ear. It does give off a small measure of heat (due to the hydrogen) making it capable of burning objects touching it directly.