HKM-891731 Automatic Gravity Duck Cat Toy with Simulation Vibration and Sound, Rechargeable Battery, Catnip IncludedIntroducing the HKM 891731 Automatic Gravity Duck Cat Toy, designed to engage your feline friend in hours of playful fun. This innovative toy features simulation vibration and sound, mimicking the motions and sounds that stimulate your cats natural hunting instincts. Crafted from long hair carved velvet soft cloth and durable polyester fiber, this toy is both soft and robust. The HKM 891731 comes equipped with a rechargeable polymer lithium battery,