(1) No noise and heat, starting voltage range form 110v to 250v (2) Steady performance, durable, rapid start, long life-time Fluorescent Lamp BaseFor international business, 50 hertz or 60 hertz equipment and voltages required are available(1) No noise and heat, starting voltage range form 110v to 250v(2) Steady performance, durable, rapid start, long life-time(3) High power fator and efficiency, ...