Spy Gear - Batman Listener 100% PLASTIC No one hides from Batman. He hears everything with the Batman Listener, now you can too! Enhance your listening range up to 30 feet as you focus on your target with the sound gathering mic. The Batman Spy Listener comfortably slips onto your ear for easy and convenient use. The Spy Gear Batman Listener is for ages 3+ and includes 1 LR44 battery. Includes: 1 Spy Gear Batman Listener, 1 Instruction Guide