Build-In Motion Sensor- The Motion-Activated Cat Toy Has A Build-In Sensor Switch It Can Detect A Cat Is Approaching Or Moving And The Butterfly Will Operate Automatically Sensor Detection Range: Approximately 3 Meters Induction Angle: Cone Angle Of 180 Energy-Saving And Activate Your Kitty'S Hunting Instinct 360Rotation & 2 Speeds- This Moving Cat Toy Is Easy To Install And Use The Butterfly Cat Toy Is 2 Speeds, 3200/4500Rpm You Could Adjust The Speed According To Your Cat Just Need To Press The Power Button Then The Butterflies Will Start Spinning 360Automatically Press The On/Off Button Twice Goes To 4500Rpm Press It Three Times, The Butterfly Will Stop Working Battery Operated- Operated With 3 Aa Batteries (Not Included) Portable And Easy To Carry When You Are Traveling With Your Kitty The Best Gift For Cats And Cat Parents Starfish Shape Design- Unique Starfish Cat Toy Is Made Of High Quality Bpa-Free Material Which Is Also Durable Use Very Stable Base The 5 Starfish Foots Designed For Stability Attract Cat To Play And Exercise More To Keep Healthy Color Your Cat'S Indoor Life Especially When You Are Not At Home 2 Replacement Butterflies- The Kitten Toy Comes With 2 Beautifully Replacement Butterflies So That Can Provide Long-Time Fun To Your Lovely Cat The Butterfly Part Is Detac