This colour changing LED lamp is either USB or battery operated (batteries not included). The lamp uses a laser engraved 4mm wide acrylic insert (also sold seperately) which can be swapped for similar size inserts on our site. 
Insert dimensions are as follows; Height-15.6cm Width-12cm Thickness-0.4cm
Lamp dimensons are as follows; Diameter-10cm Height-10cm
 
*Please note any misspellings/errors sent by the customer will be seen on final product and SlickJack cannot be held responsible.