Well, these are my first 16340 batts. I was searching for one of the smallest protected 16340s, and, along with AW 16340, these are quite small enough to not have problems with fitting 
Price paid (for pair): $11.23 (directly from Efest, HK post with tracking number)
Initial voltages: 3.90 and 3.92
Size:
diameter: 16.47- 16.67mm (where protection wire is located. See this image (by HKJ) for more info)
length: 34.35 mm
Sorry, can’t provide weight and capacity infos :shy: Hope HKJ will do a good review in the future 
However, I’ve found this test at 2A discharge. They (Efest batts) looks slightly better than AW 
Overall - nice batts but… only time will tell if they are good enough
(don’t know if that review is good or not, but I’m very happy to know that they are at least the same or even better than AW)
