Add a touch of nature to your Christmas décor with these wood Christmas blocks. Each block is made from MDF wood and is decorated with bristle trees, festive wood JOY lettering and snowflakes, and 15 warm white microwire lights. Battery operated with a built-in timer function that runs 5 hours on and 19 hours off.Details:Brown and green15" x 4" x 9.5"15 warm white microwire lights with timerRequires 2 AA batteries (not included)MDF and bristlesFor indoor use only