1. Use imported LED 0.5w or 1w tubes as demand. 2. Brighter, low consumption, long service time. 3. 15 kinds of flash pattern. 4. Colors: Red, blue, green, amber and white. 5. Use special microchip controlling cuecuit. 6. Set indoor or outdoor by stucker or screw. 7. Lenght: SL630: 124(L)x88(W)x(59-74)(H) SL631: 214(L)x88(W)x(59-74)(H) SL632: 394(L)x88(W)x(59-74)(H) SL633: 574(L)x88(W)x(59-74)(H) SL634: 754(L)x88(W)x(59-74)(H)