Orman Set of 140 Blue Random Twinkling and Chasing Mini Christmas Lights 140 Blue Bulbs on green cord. 4" Spacing. Indoor/Outdoor Use. A full range of speed control by a high technology micro-chip allows the speed at which the lights twinkle and chase to be adjusted by the user - from slow speed to full strobe effect or steady burning. (Please Note: These lights ARE NOT end-to-end connectable.)