Sunniemart 40 Led Multi-colored Rose Battery Operated String Lights Outdoor Decorative Lights for Christmas, Wedding, Party 1. Approx 4M with 40 LED lights 2. 3 x AA batteries required (not supplied) 3. Two Function modes: Blinking and Steady on 4. Great decoration for Christmas, birthday parties, weddings, gardens, rooms and other celebration occasions, both indoor and outdoor use.