Ya. No IBS, no PD, this is just a simple light, quite simple.
The material is stainless steel, E3 uses a Q2 class LED and E3P is a Q5. Only accepts Alkaline or Ni-MH/Ni-Cd, CAN NOT use with Li-ion. I think the reason could be as follow:1, IBS system runs BAD with a single AA, for the efficiency is very low. 2, stainless steel is not able to cool the LED down when it is fully working.
Both E3 and E3P have a forward clickie, even E3P's switch cap is also metal. Both E3 and E3P have anti-reverse battery design(is it called like this?). Both E3 and E3P have only two modes ---- high and low, changed by twist the head.
So it is a simple light with simple appearance, simple functioning, simple usage. And that's what I like most.
BTW: I'm going to buy myself one.:twothumbs