On old mobile these deal 650 damage to any living creatures in a 2 meter radius, have a max stack of 50 and cannot harm you or your tames, meaning that you can put these near your feet/strap these on your tame and detonate them when any aggressive creatures run at you so anything thats attacking you or your tame is now dead

On every other platform besides mobile though they do 1500 damage to any living creatures in a 2 meter radius, have a max stack of 100 and can harm you and your tames so if you detonate a c4 thats near you or a c4 attached to your tame then you will die/your tame will take massive damage

And of course on both versions they deal increased damage to structures and have 2 hp