This mask has a scary surprise beneath it. The top layer is a lit mask and the lower layer is a creepy skull. 7 flashing modes – 6 total LEDs. Dimensions: 8″ tall 6″ wide On/off button featured top, center. The white mask may be removed with a screw driver. 2 x CR1620 batteries included – replaceable. Runtime – 12 to 16 hours.