the pear for my shed I've bought. It illuminates wonderfully bright and consumes only 7 watts. (Battery keeps safe for a while) The advantage is you can install every possible lamp and the bulb screw (E 27 socket) Do not confuse polarity - the thread, + the pen. Battery scrap yard or get somewhere cheap and you've got decent light where there is no electrical connection. I have installed a switch to me and I am so happy because I usually pick up the wood always had to hold buckets and lamp. Should I have been making more years !!! The only disadvantage that you have to have patience for a while will be delivered to the bulb. Probably comes from China.