Description: Flashing Ball: These clear plastic flashing balls light up and flash when they are touched and move.  How to Work: Press the switch to start, the ball will flash for about 3 seconds after cat not playing with the ball, and then stop emitting light, touch it again to roll the light, and press the switch again to turn off the power. Pet Toy: They are designed for cats and pets, but have been used by paranormal investigators for some times now.  Portable: Small size, easy to carry. Design: Transparent football-shaped shell with bright red switch. Specification: Material: plastic Shell color: clear Size(approx): 3.5cm/1.38inch(Dia) Red button height(approx): 0.3cm/0.12inch Power by: built in 1.5V button batteries(please note: the battery cannot be replaced.) Package:  3 pcs * flashing ball