The SmartStem is equipped with the following features:

Brass stem, aged brass finish
Adjustable collar with thumb screw
Ceramic bi-pin socket
Xelogen lamp, 20 watt, 10,000 hours (included)
Maximum Wattage = 20 watts
25 Foot wire lead, 16 awg (UL listed), brown
Pre-connected to the socket
Pre-stripped for easy wire connection
Plastic ground stake (8.5 in; 21.6 cm length)
Lifetime warranty on fixture housing
(Lamp does not carry a warranty)

SmartStem
Adjustable Light Collar
If you need more light, thread the collar down, exposing more lamp. To remove glare or if less light is required, simply thread the collar up. Tighten the thumb screw to secure collar. *Note: Area light hats and Transformers are sold separately.