Specifications: Bulb: E27 /E26(not included) Voltage: 85V-265V Material: Metal Cable: 1 m Variation: No Blub: only the lamp and bulb is not included Tri Color: Tri Color bulb is included and color can be change from cool white,warm white and yellow by on/off.But Brightness is not adjustable. Tri+DIM Bulb:ri Color bulb is included and color can be change from cool white,warm white and yellow by on/off.But Brightness is adjustable. Features: The lamp itself takes up to a 40-watt bulb (not included). Modern and sophisticated black swing arm design. Steel spring and tension control knobs. Ideal for any studios, home or office used.