Size:the length of tube37 cm, head of length3cm Package： QTY/CTN.： 100 PCS G.W.： 8 KGS MEAS：58.9*28.5*23.8CM 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 Delicated designed,exquisite appearance,especially agree office using,also can meet desk computer by extend line; Various colour selection; Flowery and individual LOGO can be designed 23*18cm,suppliers and distributors can choose it as promoting and advertising gifts; Considerate design,no national bunderies propagandization,wonderful promotion gift Certificate Standard：ROHS CE