3 Lighting Modes and 10 Brightness Levels Dimmable LED clamp desk lamp with 3 lighting modes: warm light (3000K), warm white light (4500K) and white light (6500K). There are 10 adjustable brightness options for each lighting mode. The built-in controller is easy to switch to the lighting mode to suit your various purposes, very suitable for reading, computer lighting, night lighting, work, study, children's sleep, etc. Upgrade Eye Protection Light and Positioning in the Dark Made of 18 high-quality LEDs, the LED reading light doesn't flicker, dazzle, have ultraviolet rays, and dosen't have frequent radiation. It can protect eyesight and reduce eye fatigue caused by long-term reading. The weak blue light on the switch button allows you to find the switch in the dark, this weak light produces almost no energy consumption. Flexible Arm and Firm Clip The 15-inch gooseneck arm can be bent into any shape to adjust the lighting direction, and can be adjusted to any angle more than 30,000 times. The metal clip with non-slip pad can hold any surface firmly, and can be easily clipped on tables, desks, bedside tables, shelves, chairs, benches and more. The non-slip mat prevents scratches on furniture. If the arm is bent into an appropriate shape, the clamp can stand on the table by itself. USB Power SupplySuitable for most devices that support USB ports, such as power banks, USB chargers, PCs and laptops, adapters (not included), etc. [Reminder: only used with 5V/2A adapter] 150cm cable, with excellent durability and long-distance power supply. Note: This USB desk lamp cannot be charged! Wide range of application The USB multi-function lamp is very suitable for bedside reading lamps, study lamps, table lamps, bedside lamps, camping lamps, baby care, etc. Choosing professional LED clip lamp is to choose high-quality and low-cost lighting life. The clip lamp can be fixed on the bedside table, desk, shelf, craft table, drawing board, work area, etc., to bring a better experience to your lighting life .