1Responsive: When this responsive yoyo spins, it will gently pull the string back to your hand, very fun, I believe you will be satisfied with delicate yoyo.2Unresponsive: Supplied with unresponsive KK bearing to replace the responsive bearing, and you need to learn more binding skills to get the yoyo back.3Rotation Stability: The delicate yoyo hemisphere weight is very precise, so the rotation is very stable, has longer playing time, so you can play it enjoyably.4Gift: The yoyo is a gift for intermediate and advanced yoyo players, it is also a good gift for your kids and friends, I believe they will like yoyo ball toy.5Alloy: Yoyo has good corrosion resistance and durability. Yoyo surface is acid washed, never fade, not easy to scratch, and can be used for a long time.