2021 New Upgraded String Lights for Outdoor/Indoor: Super Bright - New upgraded LED bulbs. Safer - UL588 Approved plug in adapter. Extendable - 4 sets can be connected in series. Each one length is 105 feet, the max expandable length is 420 feet. Waterproof - Perfect for indoor/outdoor. 8 Lighting Modes - Romantic Decoration.Total length is 105ft, of which 99ft with lights. | More Safer & Extendable & Widely Use: 29V low voltage plug with UL certified, make this lights safer than those without UL approval. Convinent to DIY the length, max 4 sets can be connected in series. Widely use to holiday season, bedroom decor, room decorations, wedding decorations, birthday decorations, holiday decorations, wall decor, home decor, teen room decor and so on. | Intelligent 8 Lighting Modes Twinkle Lights: 8 Functions modes to fit different occasions, moods, feelings, holidays, festivals, anniversaries, etc. (Combination, In waves, Sequential, Slow Glow, Chasing/Flash, Slow fade, Twinkle/Flash, Steady on). Adjust the lighting modes by pressing the round button on the adapter. And it will intelligent remember your last choice, no need to reset...

Specifications Light Color: Warm White Application: Indoor/Outdoor LED Quantity: 300 LED String Length: 105ft / 32m Work Mode: 8 lighting modes Input Voltage: 120V Output Voltage: 30V Waterproof Rate: IP55 Wire Length to First LED: 6.6ft / 2m LED Spacing: 0.3ft / 0.1m Intelligent Remember Your Choice from 8 Modes This string lights come with 8 lighting modes: Combination, In Waves, Sequential, Slo-Glo, Chasing/Flash, Slow Fade, Twinkle/Flash, Steay On. It will intelligent remember your last choice, no need to reset every time. IP55 Waterproof For Indoor And Outdoor High waterproof rank make it suitable for indoor and outdoor use. Such as Wedding, Holiday, Christmas, Garden, Yard,Lawn, Fence, Porch, Tree, Roof, Deck and so on. Max 4 Sets Expandable Each fairy light comes with end plug, which makes you can connect them together. Please notice that max 4 sets can be connected together. Length of each string lights is 99 feet + 6.7 feet extra wire from plug to the first led, so the max expandable length is 420 feet.