Warranty (1 year) For any product that may be defective, please contact us first and we will provide you with a replacement or refund "Customer Service" Features: LED eye desk lamp: LED eye desk lamp adopts DC drive technology, and LED desk lamp without flicker is healthier and protects your eyes. It is safe for children and protects children's eyes better. 3 COLOR MODES & Stepless Dimming MODE & MEMORY BRIGHTNESS: 3 COLOR MODES , 3000K warm light (yellow light), 4000k neutral light (slightly yellow light), 6000k cool light (white light). >The desk lamp's memory function automatically remembers the last brightness setting used. The color temperature cannot be recalled. Please press the button to adjust the brightness , short press to adjust the color mode. Energy efficient LED: Lifespan up to 50000hrs, 40 times longer than a typical incandescent light. Our 4.8W LED lamp can achieve the same level of illumination while saving up to 80 precent of energy compared to traditional incandescent bulbs. Adjustable ANGLE and space saving:< br> Small LED desk lamp with left and right rod axis at 90&deg;, up and down at 90&deg;; Up and down base axis at 90&deg;, can be adjusted to any angle for optimal lighting. The Led desk lamp can be folded into a small size so as not to take up too much space when traveling. USB charging: No battery version can be used directly from the USB charging cable. The version battery can be used either directly by the USB charging cable or by the battery. Product information: Type: USB powered (no battery) / Rechargeable (1200mAh battery) Material: ABS Light Source: 16 led lamp beads Wattage:4.8W Luminous flux:600lux (tested at 28cm from the light source) Color temperature: 3000k-warm light; 4000K natural light; 6000K white light. Body color: white Battery type: no battery/1200mAh battery Input: DC 5V 1A Power Source: USB Cord Data Line Length:68CM Lifetime:&gt; 50,000hrs Package including: 1*desk lamp 1*USB charging cable 1*manual < br>