Push down and go with the press-and-release feature that sends the Martin the Monster Truck racing This monster truck has a mechanical engine that rocks back and forth for fine-motor development Press the light-up windshield on the front of the monster truck to hear three sing-along songs, six melodies, and the letter "M" for monster truck Drive Martin the Monster Truck on most Go! Go! Smart Wheels playsets (sold separately) with SmartPoint technology and hear unique phrases & sounds Intended for ages 1-5 years. Requires 1 AAA battery. Battery included for demo purposes only. New battery recommended for regular use Fasten your harness and pop a wheelie with the Go! Go! Smart Wheels Press & Race Monster Truck. Press down on the back of the monster truck and release to send it racing. Martin the Monster Truck is just the right size for kids' hands and sports a friendly, light-up face button that plays three sing-along songs and ten melodies. Learn the letter "M" during imaginative play with Martin. A mechanical button makes the engine rock back and forth and to encourage fine-motor skills through button pressing. Push the monster truck around to trigger fun role-play sound effects. Take Martin the Monster Truck on an extreme adventure on most Go! Go! Smart Wheels playsets (sold separately) and discover more phrases, songs, sounds and lights as he rumbles over the SmartPoint locations. Intended for ages 1-5 years. Requires 1 AAA battery. Battery included for demo purposes only. New battery recommended for regular use.