The lites belong to a friend of mine they are about 10 yrs old. They are 10 watt and 15 watt and have a rechargable battery. The bulbs are a screw in base and are frosted. The only marking on the bulb is 5.5v and 1.67amp. According to one website the are a GH-44 bulb but I can not find anyplace the cross's a GH-44 with anything anyone ever heard of.