I regard the Acebeam E70 as mostly a collector's piece/ shelf queen. Real life, practical usefulness is minimal. It certainly functions as intended and looks awesome as well, but it's primarily just fun to own! With the purchase of the brass edition, I now have four different versions. Titanium, copper, stainless steel and of course brass, completes the collection that I personally want......unless of course, if Acebeam decides to make, oh say....... a titanium/copper Damascus model, with a red internal aluminum tube. HINT,HINT Acebeam! I DARE YOU!