Size: the length of tube17 cm, head of length20cm USB line length: 1500mm Work of length: 1300mm Package： QTY/CTN.： 30 PCS(Colour box) 40PCS(Shaped plastic and paper card) G.W.： 9.4 KGS 7.8KGS N.W: 8.4 KGS 8.6KGS MEAS：65.5*30*50.5CM 60*39*29.7CM -Gentle ray, bright, without frequency change, benefit from preventing eyesight. -By using lowest work voltages: 5V safety &reliability high efficiency, saving energy. -It makes 20 times long life than normal daylight by placing exceed age’s cold light tube -The lamp which not only can form a complete set with USB computer socket, but also can directly set with city power supply. -Connect lampshade &lamp base in soft tube. -Economic, beauty. Convenience on easy handle light direction Certificate Standard：ROHS CE