UPGRADE BUTTON: The latest upgrade, original click switch button is upgraded to a sliding button, which makes the switching function more convenient 2022 NEW FEATURES: 3 most useful functions: Safe green LED pattern, 5 patterns can be switched by scrolling the wheel, it is recommended to use this mode within 2 meters. Classic mode for all cats. LED flashlight, can be used as emergency lighting CHARGE UPGRADE: The charging method is upgraded from the original data cable to a USB straight plug, which can be seen by opening the back cover, which is more convenient. It can be fully charged in about 1.5 hours, and the charging output power should not exceed 5V, 1A SAFETY: LED pattern mode to ensure the safety of pets without reducing the cats interest