They are great for the price! They are visible during the day and very bright at night. I bought two, one green and one amber. I took both apart, turned off half the yellow lights and put them in the other, turned off half the green lights and put them in the other. Now I have two pieces, half green, half amber. After disassembling them, I replaced the silicone sealant so my work wouldn't be wasted in the rain. Only thing I wish they had some sort of indicator that tells me what flashing mode I'm using in the car.
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