Equipping your Christmas tree, patio, or the exterior of your house with lights has never been easier with the Twinkly Smart Decorations Custom 400 Bulb LED RGB + White App-Controlled String Lights.These LEDs make perfect lights for classrooms while also being ideal string lights for dorms as well. Twinkly String Lights are waterproof, which makes them the perfect indoor and outdoor decorations.Designed with dazzling RBG + White colors, this 400-bulb string of lights is perfect for the holiday season. Unlike your more traditional lights, these lights are smart and pair with the Twinkly App and smart homes. Download the Twinkly App and map the string lights or create a custom light display. You can even download pre-loaded lighting effects or draw your own display design for full customization.Overall, this purchase includes 1 string of lights and controller, 1 adapter, and 1 quick guide. Make this holiday season the best one yet with the addition of the Twinkly Smart Decorations Custom 250 Bulb LED RGB + White App-Controlled String Lights. This bundle includes a Twinkly USB-Powered Light Effects Music Player Dongle.