I purchased this at Yodobashi. It's small and easy to carry, and it's convenient to use, but I rarely use it anymore. Since it's in very good condition, I'd like to sell it. The manual and box are not included; only the item itself. The specifications are quoted from the official website below: OHM Electric OHM LED Desk Lamp with 3-Step Dimming Function, Blue DS-LS16K-A [Features] ● Slim and simple design that doesn't take up much space ● Bright, even though it's small, with a total luminous flux of approximately 440 lumens ● Compact and convenient to carry ● 2-step dimming to adjust brightness ● JIS standard A-class equivalent, illuminating a wide area ● Suitable for reading, precision work, and various other situations ● Color: Blue [Specifications] ■ Power supply: Dedicated AC adapter Input: AC100V～50/60Hz 0.3A Output: DC12V (DC) 0.32A ■ Light source: LED x 20 lights (not replaceable) / Daylight white ■ Power consumption: Approximately 5W (at 100% brightness) ■ Total luminous flux: Approximately 440 lumens (at 100% brightness) ■ Energy efficiency: Approximately 88.0 lm/W ■ Illuminance: Approximately 1700 lux (30cm directly below / at 100% brightness) ■ Body dimensions: (approx.) Width 90 x Height 300 x Depth 270 mm (during normal use) ■ Weight: Approximately 640g (including dedicated AC adapter)