A Chi Rho sticker based on the now famous Blue Tooth symbol. 2 inches tall, 1 1/4 inch wide. Many know the story of the name Bluetooth was borrowed from the 10th-century, king of Denmark, King Harald Bluetooth; who was famous for uniting Scandinavia. What most stories leave out is that Harold united them under Catholicism. Slap this sticker on your computers, tablets and phones to get some conversation starting double takes!