ADV PRO led021-b Karaoke LED Neon Light Sign with Whiteboard Authorized Seller with best quality. Using the highest quality acrylic plastic and led lighting Thickness of our sign is only 13mm (tradtional LED sign is around 25mm to 35mm) Provide US plug to USA & CA, UK plug to UK, AU plug to AU & NZ, EU plug to European & other countries, universal voltage suitable for worldwide use (110v to 240v) Approximate size: W 13"x H 9"x D 0.5"(W 330mm x H 220mm x D 13 mm) Provides a white board at the back for you to write