One spin: 29:36 by snapping fingers
Notice: spin time is highly related to your skill, power and base used.
Our master corrects the dynamic balance of each top by hand; it will cost him about 5-8 hours to make one top like this; and you can count those masters on one hand; if one spinning top can not meet our stand we simply discard it (our factory standard is 15 minutes on concave glass by snapping fingers). That's the reasons why it's so expensive.
Professional player with correct base can even break 30 minutes with this one, it will affected by many factors and hard to achieve for most people.