the picture above is our super mini size with high power energy-saving lamp, the left one is 13W, 13W=60W(ordinary lamp) the right one is 9W. 9W=50W(ordinary lamp) the maximum diameter of the 13W lamps tube body is 43mm, total length is 105mm, caliber of tube is 10mm, voltage 220V/110V, frequency 50hz/60hz, rating power is 13W, current is 85 Ma. Excellent color rendering, saving power effectively, no frequent flash, long life span, protect your eyes from harm.