USB charging When charging, just twist the charging port, the USB will be exposed, when not in use can be retracted, no need to buy batteries. This is very environmentally friendly, the charging indicator goes off, indicating a full charge. Upgraded buttonSliding button design, no need to keep pressing the button, you can also exercise the cat's body, train the cat's agility, let them grow up healthy and deepen your relationship with your cat and dog.c Rich pattern designAdjust the funny cat toy pointer to the red light state, you can easily switch gears to get interesting patterns, funny indoor cat toys can print red dots/mice/smiles/stars/butterflies on the ground, a variety of pattern changes to stimulate your pet's interest, kitten indoor toys will never let your cat get bored. Durable Material]Indoor cat and dog toys with stainless steel shell, anti-shedding tape, use more durable. Easy to carryMini cat toys, easy to carry, can easily put in your pocket or bag, replenish the use anytime, anywhere.