Model Number: PGS-088 Key Specifications/Special Features: LED display area: 178 x 50mmSupports all kinds of languages4 brightness levels and 8 moving speed levels for selectionCan store around 650 Chinese words and around 1130 English alphabetInput the words by plugging USB to helmetAccessories include software CD, USB cord and an adapterPowered by solar energy or adapter (100 to 240V)