Operation confirmed. The flexible arm allows you to freely adjust the direction and angle of the light. Simple ON/OFF switch only. Designed with a DC power circuit to suppress flickering. GENTOS LED desk light DK-S66BK Black Lumillion Series DC3.6V, 2.9W energy-saving design Light source used: White LED 3W x 1 Brightness (approx.): 160 lumens Illuminance directly below (at 25cm maximum): 1100 lux Input voltage: DC3.6V Power consumption: 2.9W Power supply: AC adapter (Input: AC100V 50/60Hz, Output: DC3.6V 500mA) Body size (approx.): W100 x H280 x D225mm Body weight (approx.): 500g