Comes with screwdriver This package contains 12 button cell AG13/LR44 batteries. As your Hexbug swarm grows, you won't want to be without plenty of batteries! This convenient pack of batteries ensures that your Hexbug creatures will keep running, skittering and racing around for hours of buggy fun. Great for stocking up so that your Hexbugs are always ready to go. Keep your Hexbug creatures powered up and ready for fun! WARNING: Not rechargeable. May explode, cause burn injury or leak if recharged, disposed of in fire, inserted incorrectly or disassembled. Replace all batteries at the same time. Do not mix old and new batteries. Keep out of reach of children. Keep your HEXBUGs running with these replacement power cell batteries! This package contains 12 button cell AG13/LR44 batteries.