Having received these four celestial solar lights as a gift, they really decorate the garden when the sun shines. They are solar powered, so the rechargeable batteries are charged by the sun. The charge can give up to eight hours of light. If you do need to replace the batteries they are replaceable. You will find an off and off switch, and there is never any bulbs to change. Just make sure to position them so they can get direct sun when charging. At night they illuminate and change color, through their decorative glass globes. You will see them change to blue, yellow and green right before your eyes. The two sun and two moon style lights are 32" and 33" tall when on their poles that insert into the ground. They are also very easy to assemble, with only four sections. The two sun and two moon style lights measure 32" and 33".
Once before i had some of these and they were so nice in my garden, that my neighbors would come over to see what was changing in the garden at night. Finally after much use, they needed to be replaced. My family bought me another four light set, alittle different from the first set, but still nice and colorful in the garden.
Update On Apr 07, 2010: These add so much to my garden, Now that the weather is looking better, i can't wait to put these out and watch them change colors.