Streetwise Three Volt Lithium (CR2 - a common digital camera battery) battery. The CR2 batteries are used in the "LR800" Stun Pens, "ICP900" Cell Phone Stun Guns, and etc.
PLEASE NOTE that this is the price per package (pkg. = 3 batteries). Check each item's description for the number of batteries that are required. For a single pack of CR2 batteries see item SWCR2S.
