Grasslands Road Solar Star Mobile Hanging Decor Metal/Plastic/LED Lights Dimensions: 30 x 6-1/4 x 6-1/4 (inch); hook for hanging Includes 1 AA rechargeable battery Solar powered star mobile illuminates for up to 8 hours; solar panels collect sunlight to automatically light up at night Once the star mobile is activated, each star's colored light fades in and out repeatedly