This Hortilux Super HPS 600W Bulb is perfect for all your indoor and outdoor growing needs. With a socket size of E39 and an input voltage of 120V, this bulb is suitable for maintaining mother plants and flowering. The red and full spectrum light ensures optimal growth and the 88,000 lumens provide ample brightness. The HID lighting technology and universal position feature make this bulb versatile and easy to use. The energy star rating is A, making it an efficient choice for your gardening needs. It is an ideal choice for those who want to enhance their gardening experience.