Crystal Dimension: 5x5x8 cm. The Free Light Base with Adapters are of 2 types: - Fixed White Color LED Light base (No Battery option) and Rotating Multi Color LED Light base. Based on your needs you can choose the Free LED Light Base accordingly and mention it along with photo sharing Email. Rotating Multi-Color LED Light base works both on Battery and direct power supply. Rotating movement is achieved through direct power supply only. Note:- Battery is not included.