How to distinguish LEDs CREE XM-L T6, XM-L2 U2 and XP-E Q5 visually (external differences) - YouTube
Cree XP-L V6 2C led, tested against XM-L2 T6 3C, edit23/7: I repeated the test and measured a dedomed XP-L - Flashlight Modding and DIY Parts - BudgetLightForum.com
$10 Bike Headlight! CREE XML T6 USB LED Headlight - GEAR REVIEW | #AdventureBiker - YouTube