Your Stealth bar is consumed 50% slower.
Eliminations grant 15-75 Stealth Resource.
Reduce the movement speed penalty of Scope by 20-100%
Gain 10-50% Movement Speed for 2s when entering stealth.
Increase your Reload Speed by 10-50% while Stealth is active.
Increase the ammo count of both of your weapons by 2-10.