New to this Christmas Season illuminated baubles, Gabriel Glass bauble has a diameter 8 cm . Inclusive a mini light chain of 5 Lights. The glass angel creates a magical feeling and beautiful reflection. The Sirius angel has a built in timer function and will turn off automatically after 6 hours. After 18 hours, the ball will turn on again, and so it continues, if you do not use "off" button. The 1xAAA battery is hidden in a decorative metal holder. Batteries are NOT included.