Small expolsives that are not meant to cause damage.
The pulsar is about the same size as a walnut. It has a botton that when pressed a timer starts and after 3 seconds it explodes. The explosion does not cause any damge unless at very close range put it does relase a bright flash and very loud pop, causing great confusion.
If you need a quick getaway or you just need a distraction. They can be very effective against a group of enemies. Monsters with sencitive hearing are powerless when one of these used.
They are simply a GAO version of a flashbang grenade