This Twinkle Snowflake String set comes with 20 snowflakes per set. The snowflakes measure 3.5 inches x 3.5 inches and have 6 LEDs per snowflake. They have a spacing of 10 inches. It includes a 24 volt transformer with a 5 foot cord as well as an 8 function controller with a 6.16 foot cord installed. It is suitable for both indoor and outdoor use.