Key Attributes: Specification:Product Name:Wrist BallColor: BlackSize: 7 * 7 * 5 cmWeight: 0 kg Note:1 be reminded that due lights effects, monitor&;s brightness/contrast settings etc, there would be some slight differences in the color tone of the website&;s photo and the particular item 2 Item Measure via hand, it might be 1-3cm different,your variety realizing could be a lot preferred