He, or High-Explosive grenades do not rely on shards of shrapnel to cause harm. Instead they rely solely on its explosive power generated by the plastic explosives packed inside. Effective at taking out soft targets within range this however is not their intended purpose. The grenade is designed to cause damage to armored targets and vehicles.
The grenade is spherical with a vertical slit running along the equator. The user twists and pushes it into place. A button will pop up out of the top which should then be depressed to activate the circuit the user then has five seconds to throw.