There is no need to buy an alternative battery, the regular AA works excellent.
The beam can be focused to be larger or smaller, by simply turning the front lens.
WEATHER, WATER, & SHOCK RESISTANT: Designed for rough handling, it''s perfect for use in the rain, snow or emergency situations. It can be completely submerged under water for a short period.
WELL PORTABLE: Tail-switch which is also very responsive and easy to use, Pocket-Sized.
MUL-TIFUNCTIONAL: DULEX CREE XML Q5 LED Flashlight is a very nice multifunctional flashlight. around the house, for your vehicle, while hiking, camping, or backpacking this is an excellent option.

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 4.3 inch
Height : 0.3 inch
Length : 7 inch

Item Weight: 2.56 ounce (View shipping rates and policies)
Shipping Weight: 5.6 ounce (View shipping rates and policies)

ASIN : B06Y637QNV