Buckle closure 【?Comaptible for】--Please Notice That the luminous band can only compatible for SyncUp watch,gabb watch,gizmo watch, please check the watch model before purchase. 【?Luminous Band】--The Asondig syncup watch band made by special silicone material, it can absorb the light and glow in the dark, very funny and suitable for night party, making surprise for childrens. 【?Soft and Wear-Comfortable】--The luminous band is 5.3-7.8inch. Made by soft silicone, the sync up band is very soft and the kids will not be sensitive, protect the kids'skin. 【?Easy to Install】--Just press the pin on the both ends of the gabb watch band and release, the installation can be finished. The kids can install the gizmo watch band by themselves, easy and quick. 【?Long Time Warranty】--Asondig offer 12months quality assurance, please feel free to reach us if you have any problem, we will reply you as soon as possible within 12hours.