NOW AVAILABLE IN COAXIAL! *NEW* True Twinkle LED Mini Light Strings create a beautiful twinkle effect with every bulb slowly fading on and off randomly. These are not your ordinary twinkle lights where only 20% of the lights twinkle, True Twinkle lights use a new technology to create a 100% random twinkle light show. These strings have non-removable LED's to eliminate failures from loose, broken or removed bulbs making these commercial grade LED Christmas lights very durable long lasting and extremely energy efficient. Each string is also full wave rectified which eliminates any flickering while making these LED Christmas lights brighter than ordinary LED mini Lights. Each LED uses a patented concave design making these LED viewable from all angles. Energy Star qualified and UL Listed for indoor and outdoor use. Connect up to 43 strings end-to-end.