Sounds are mechanical, no batteries needed Pull cord to hear engine sounds. Clicking key and moveable throttle. Push mower, beads pop as you push. Removable gas can. Kids can open the tethered gas cap and pretend to fill up the lawn mower. Gas n' Go Mower, a lawn mower that looks like the real thing! This outdoor toy comes with everything you need to keep the yard around your playhouse looking sharp!