1.Outdoor/Indoor Upgrade Christmas Lights: This Christmas light string uses light bulbs, safe plugs, waterproof, 8 lighting modes, romantic decoration.2.With 8 Modes: The Christmas fairy string lights have 8 different modes: wave, combination, fade, etc. Every mode is so different and it's great to have that option because every night mode is different.3.Waterproof: Suitable for outdoor use without damage, including heavy rain and snow conditions (the power adapter is not waterproof, it should be kept dry when used outdoors).4.Wide Use: This Christmas tree light is widely used in party, bedroom decoration, Christmas decoration, wedding decoration, holiday decoration, wall decoration, home decoration, garden decoration, etc.5.Good Gifts: You can also give this beautiful light string as a gift to your family/friends/colleagues, etc.