Specifications: 1) Single-coil: 36V-250V, 1,000-5,000 hours 2) Double-coil: 110V-250V, 1,000-5,000 hours 3) Triple coil: 110V-250V 4) Main-supplementary coil: 110V-250V 5)custom-made Features: 1) Uniformity in pitch, shape, color, luster and piece weight; 2) High lighting efficiency 3) Long life 4) Quick start-up