First produced in 1996 with over 8 million sold, our As Seen On TV 25th Anniversary Limited Edition Original Singing Bird Clock features Enhanced Artwork & New Dynamic Authentic Sounds of some of the most recognizable Songbirds in North America. As a bonus, detailed packaging and an included Field Guide provide bird habits and habitat information. With bird watching the second most popular hobby in North America, the 25th Anniversary Original Singing Bird Clock will be wildly popular with birders and lovers of the outdoors alike! Light sensor deactivates songs when room is dark.