Portable Lamp? Heat Dry?

Hi eveyone, Im looking into buying a portable desk lamp and Ive been reading some previous threads which have some good suggestions but Im a bit stuck as Im also looking to buy some Heatdry and use as a top coat-it says this needs a 60w lamp to set it but a lot of these lamps are 75w (old wattage) as some are low energy bulbs. I also could do with one that runs on bateries too as a power point isnt always in reach in some clients homes. Has anyone got any suggestions before I buy one (and possibly waste my money!:irked:) And also, how do you find the heat dry as a top coat? I usually use a gel top coat as a sealer and realy want to get away with using my uv lamp as its soo much stuff to cart around!!! Thanks in advance xxx