Just saw Wuben A21 on Wuben Light Worldwide facebook page. Jesus, can't believe that small light can emit 4200lumen. Can't wait to see someone make product review of that.
Ok, mister Ben Wu.
You sound like a company rep.
4200 lumens from a light this size is in line with the Acebeam L30, Emisar D4, Thrunite TC20, etc.... High output to be sure, but not groundbreaking.
Wuben not the first.21700 flashlight is very rare in the market, Wuben maybe the first one to bring that to the market.