Nitecore E4K - 4400 lumens - CREE XP-L2 V6 LEDs - 21700 x1
Nitecore EC11 - 900 lumens - CREE XM-L2 U2 LED - CR123A x1 or 18350 x1
Nitecore EC20 - 960 lumens - CREE XM-L2 T6 LED - 18650 x1 or CR123A x2
