Doc Johnson Alkaline Batteries LR44/AG13 6 package. Do not let dead batteries kill your buzz. Small but mighty, these 1.5 volt alkaline cell batteries are perfect for powering all of your smaller vibrating toys from our extensive selection of bullets and mini vibes. There is nothing like the frustration of a battery that loses its juice just as your play time is heating up. That is why they created their own line of long lasting, dependable alkaline batteries to keep the entire Doc Johnson collection going strong. Contains no Mercury and no Lead.