Instructions for use: After connecting to the USB power supply, press the switch to turn on the light, and adjust and close the tap to adjust the three-level brightness. Cactus Pen Desk Lamp: Eye Protection with LED Soft Light/Glare Free/Flicker Free Bionic Cactus Shape: Cactus design inspiration, eclectic, elegant and fun. The shape of the tube light body can be changed according to the mood, suitable for every scene and any position It's a lamp and a pen holder: relax after work and study Intimate small table lamp: close to your desk and office, efficient work, serious study, uniform light and soft immersion, focus on you Touch, bearing seat, soft light is not dazzling, USB charging can be reused. Three-level touch dimming: use touch switches to adjust the brightness of different ages/eyes/environments Instructions for using the light button: light: The first key of the function key operates the LED light, the default is low level, the second key switches the second level, the third key is the third level, the LED light is on, and the fourth Touch key switches the LED light. Ring light guide design: soft lighting, eye protection: using soft LED lights to save energy, simulate natural light, soft and not dazzling, not flickering, do not hurt the eyes Eyes aren't just tired from ring lights: the design of the reflective ring produces less ghost light for clear reading Product name: USB touch cactus desk lamp Material: ABS/PP/metal tube Weight: 255g Supply Quantity: 1 Piece Product color: blue Nominal Voltage: 3.7v/18650/1200mA Rated power 3W Lighting: 350LN*<35cm Color temperature: 6000k250k Battery model: 18650 Battery capacity: 1200mAh Total Run Time: Approx. 15 hours low brightness, about 4 hours high brightness Charging time: about 2 to 3 hours Product size: 13.59.841.5cm