Description: Length: 1.5M/10LED, 3M/20LED, 6M/40LED, Requirement battery: 10 LEDs Require 2 AA batteries 20 LEDs / 40 LEDs Require 3 AA batteries ( batteries not included) LED Numbers: 10leds / 20leds / 40leds Mode: 10leds (No flashing mode) 20leds, (With flashing mode ,when the switch is in the middle) 40leds, (With flashing mode ,when the switch is in the middle) Colour Cool White, Warm White ,Multi Colour Package Included 1 x Fairy String LED Light (battery not included).