3 levels of variable intensity: a single touch for low light, a double middle contact and three stronger contacts. to meet your needs in different light environments. Adjustable Collar: Designed with flexible silicone gooseneck. You can adjust the lamp head 360 degrees so you can read the books clearly and comfortably. Portable and Rechargeable: With built-in 400mAh battery, you can use the USB charging cable to connect the adapter, computer and mobile power to charge the lights. The indicator lamp lights up during the charging process. AT THEfully charged, the light will turn off automatically. Eye Protection This dimmable reading light is bright enough yet soft to protect your eyes. Enjoy a larger lighting area, balanced and flicker-free light with ease. Energy efficient and durable: 1.8W, 14 bright LED bulbs. This study light is energy efficient, costs 75% less energy than incandescent bulbs with the same brightness, stable and flashing. Color: Blue Clip Product Specifications - Lamp type: LED light. - Material: ABS. - Input: 5V / 1A. - Power: 1.8 W. - Lithium battery: 400 mAh. - Package size: 3.5 x 2.4 x 6.3 inches. Including 1 LED table lamp. 1 USB charging cable. This is a simple and elegant LED desk lamp with a modern design. Three levels of brightness adjustment: level - minimum brightness; Level 2 - medium brightness; Level 3 - the strongest light. Adjustable Neck: Designed with flexible silicone gooseneck. You can adjust the lamp head 360, which helps you read the book clearly and easily. Soft light - soft and even light, flicker-free, easy on your eyes. Energy saving: 75% energy saving and environmental protection than incandescent lamps.