This 2 in 1 portable lamp is our most versatile ever. Either choose from a handy desk lamp or simply clamp it on. Features 40" reach extension arm. On-off switch on shade. Uses base or plastic C-Clamp and PL-13W bulb (all included). The PL bulbs are easily obtainable at any home store. They are either 13W (60 watt incandescent) or 27W (100 watt incandescent).