Hi Sherrigiles, There is 24 inches between each of the shades; each shade is 2"x2.5". There are 10 Nylon Lanterns on each strand. There's 15 feet between the solar panel and the first light...the total strands length is 33 feet. It should more than cover a 3 foot tree. This string light is solar powered. The solar housing component receives it's charge during the day and the light sensor automatically triggers the lights to glow and night. It will also automatically turn of the lights, when it losings the charge or daylight triggers it to do so. I hope this answered your questions! Thank you for your interest in our product!