Brand new. Never used. Ball can change to a bunch of different colors. 1.Size:D12/15/20/25cm 2.Material: PE plastic 3. Battery: Built-in 85-265V, 3600mAH NI-MH battery 4.Charging time: 6 hours 5.Working time: 8-10 hours, the total working time is more than 10,000 hours 7.Control method: remote control + button