Incandescent Christmas Lights: 150 count per string with bulb space 0.21ft, 2.5V and 0.43W per bulbs, built-in 3A fuse for safety use. Extra bulbs and fuses included. | Connectable: This mini Christmas light set is end to end connectable up to 3 sets (450 lights), expandable to a longer connectability length for any project big or small. UL certified, great value and quality, safety use. | Warm White Glow: Color is warm white, the micro bulb creates a 360º sparkling glowing, super bright with a holiday atmosphere, it would illuminate your Christmas and what you want with beautiful warm color and enough brightness. With clear white wire, ideal for a tree, bedroom, patio decorations! | 600 Vibrant Lights: Old-fashion warm white incandescent Christmas light set, creates a warm and festive atmosphere, surely lights up your house, let your home become a fantastic sight to behold in your neighborhood! | Indoor Decoration: UL listed, perfect for Christmas trees, wreaths, patios, hedges, fences, pillars, weddings, holidays, prom, dance functions, restaurants, bars or wherever decoration lighting is wanted! Note: Please kindly protect these string lights from immersing in water if you use this outdoor!