The 6 Volt Alkaline Battery is for the following products.
Posted by love my jack russell on May 17th 2016
Review is in the title, succintly: buy the collar!
Posted by Unknown on Feb 28th 2014
I have found when in operation that this type of battery does not last that long. Also the little black round one is in the same boat. I am having to buy a few for spares.