Versatile combo lamp includes both a 19 watt CFL bulb and a 25 watt circline fluorescent tube on a 37-1/2" spring-balanced arm. Switch allows use of a circline fluorescent only, CFL only or both at the same time. Convenience outlet in clamp-on base. Clamps onto surfaces up to 2" thick. Clamp tightens with screw. ETL listed. 44-1/2" H.