The Jawjacker Auto Jigger Base turns your Jawjacker into a complete fish producing jigging auto setting device, the Jawjacker is designed to pin onto the base combining the units to work as a single fishing component. The Jigging Base fits all models of Jawjackers produced and runs off of 3 AA batteries and in temperatures ranging from -15 to -25C the unit will run 24 hours continuously. Run time is increased in warmer temperatures. The base in includes 3 different jigging wheels allowing you to vary your jigging pattern simply by changing the wheel. Jawjacker and batteries not included.