The TLG strings series are made of 3 mm Ø high brightness reflex LEDs with a 7 cm spacing. They are not connectable, but they are available in different lengths. Some models have an integrated memory controller 8 functions (7 light effects + steady light), while others provide only a steady light. The longer length strings come wrapped in plastic spools, often reused to store the strings. Models equipped with memory controllers also coming with 8/16 hour timers, that can be turned off by a light button. In this way, the strings stays on for 8 hours and then turns off for the next 16 hours.