1.it can use long time than halogen lamp so has longer service life 2.save electric energy 3.it smaller than traditional lamp Product description1) Voltage: 12V DC2) Uses super bright LED 3) LED colors: white, blue, red, yellow, etc.4) LED has its + and - poles5) Low wattage and power-saving ultra bright LED 6) Durable and non-fading brilliant beams 7) Easy installation 8) Save energy five times ...