ThorFire has a light at 40% off and it’s on Amazon so with Prime you could have it in 2 days.
AA and 14500 for power and a belt clip.
Looks like the belt clip can be turned around to clip on the brim of your hat which is very handy.
A very good review can be found here.
ThorFire TG06S: 40% OFF
40% OFF Coupon Code: 8YGYJ38C
Product Link: Amazon.com