Holiday Living 25-count Clear Incandescent C9 Christmas Lightsncandescent C9 clear lights. 25 Count C9 string lights provide up to 1,500 hours of constant white light Green cord with 24 ft lighted length with big cap matches your holiday decor UL safety listing demonstrates this product has met minimum requirements of widely accepted product safety standards Connects up to 2 sets end to end Plugged in light string 1,000 estimated burn hours For outdoor use