yes you want a good tight beam i perfer the tighter the better to pin piont wat exactly i want dog to go for if you no wat i mean with a secondary bulb or dimer also red filter . one off the things that pisses me off with the batterys is they hold like a memory so if you dont run thm dead after time they only charge from that point and dont last i thought of that new type lithegeon like on the new hand power drills they are smaller lighter dont hold a memory and last longer just a thought .Good look