The Exo Terra Heat Glo Infa Red Lamp is available in 4 wattages.  50W, 75W, 100W and 150W.  It is ES (screw) fitting.

The bulb emits infrared heat waves and is a typical heating lamp.  The spot lamp has a special built in reflector to direct the heat in any direction required.  The red glass transmits infra red waves produced by the special filament of the bulb.  The reddish light will not disrupt normal activity during night or day, which makes it an excellent 24 hour heat source.

Prices start from £6.08