【3 Lighting Modes & 9 Brightness Levels】- Eyocean Clip On Light built-in 24 LEDs (12 Cool LEDs, 12 Warm LEDs). 3 Lighting Modes，warm white, natural white, and cold white. Each mode has 9 adjustable brightness, variety of choices let you create the most comfortable and perfect lighting mood | 【Ring Design & Eye Protection 】-Ring design, larger light-emitting area, better heat dissipation The reading light provides soft Eye-Care lightning source, flicker-free, anti-glare light without ghosting to relieve eye fatigue | 【Flexible Gooseneck & Strong Clamp】- The flexible gooseneck allows you to adjust the light to where you need it to be. The Strong metal clamp opens up to 2.4 inches and with Non-slip pads can be used perfectly with music stands, pianos, office tables, computer desks and headboards | 【High-grade Materials & USB Powered】- The lamp is made of high-grade materials to ensure better dissipate heat and it won't got hot when working. The light came with a 1.6 m USB powered cable, and can be powered by any USB device(laptop/desktop/power bank/USB adapter) | 【Energy-saving & Eco-friendly】- Only cost 20% energy as an incandescent lamp does in the same brightness. No lead or mercury, No UV or IR Radiation. 5V,2A ADAPTER INCLUDED(Worth $ 10), 100% LIFETIME MONEY BACK GUARANTEE