Prextex Giant 30" Animated Hanging Bat (30" Wing Span) Halloween Decoration with Maniacal Laugh and Screams! Built-in Motion Sensor That Detects Voice Vibration and Responds with Loud Creepy Screams & Laughs. Great Halloween Decoration! Giant 30" Halloween Decoration Bat That Responds To Voice Vibration Glowing Led Red Eyes Makes It Look As Creepy As Possible Moves Its Head and Flaps Its Wings While Screaming Maniacal Sounds Battery Powered, Uses 3 AA Batteries (Included) Great Haunted House Halloween Decoration Prop