Prop features a plastic bat that drops down from the ceiling when you step on the mat. Plastic Bat is approximately 12" high x 14" wide. Plastic Mat is approximately 16" high x 20' wide. Prop includes 3 - "AA" Batteries for bat and 2 - "AAA" Batteries for mat sensor. Stepping on the floor mat activates infrared sensor and the bat wings shake, it's eyes flash, and it drops down about 20" while screeching. Includes attached 30" string that retracts after activated. On/Off switch on bat.  Warning: CHOKING HAZARD - small parts. Not for children under 3 years. For indoor use only.