Purchased by a friend. It's a gift, but I haven't opened it. Based on the product number, the following is extracted: Please purchase only if you agree. It automatically turns on when the room gets dark and turns off when it gets bright. No need to plug and unplug. LEDs save about 85% energy and last 20 times longer than incandescent bulbs. Color temperature: Warm white (2700K) Indoor use only Recessed LED Designer: Marcus Arvonen Product size Luminous flux: 4 lumens Diameter: 45 mm Output: 0.35 W Package quantity: 2 pieces