Fast, Low Speed: cat indoor cats, 2 automatic rotating modes: Fast , Low. 5 playing methods cats interested Anti Collision Wheel: when encountering obstacle, intelligently change direction, effectively reducing noise With Accessories Feathers: Replaceable, install anyone at tail, DIY according to your needs. USB Charging: type C Charging port, automatic rolling ball built in rechargeable battery Voice Control: Clap your hands to control the operation of cat feather toy Specification: Main material: silicone andtpuandabs Charging interface: type C Charging time: 1H Size Chart: 59mmx59mm or 2.32inchx2.32inch Package Includes: 1 Piece Cat Toys 3 Pieces Feather 1 Piece USB Charging Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to between different monitors, the picture may not reflect the actual the item. 3. Wish wonderful online shopping!