My Firefly4.0 Rechargeable Clip on Reading LED Lamp, 2m Micro USB Cable, 2 Padded Clip and Charger with Indicator Light, Black Body - Cool White EYE CARE & SUPER BRIGHT: preserve your eyes when reading with our warm/cool led. Complementary to your ceiling light LIGHTWEIGHT & PORTABLE: easy to pack & fix in different materials with its double padded protection, take it everywhere PRECISE LIGHTNING & MULTIPLE USES: it lights up 2 pages, your screen and keyboardwith its 4 leds and 4 brightness modes RECHARGEABLE, NO WASTE MONEY ON BATTERY: in average 10 hours of light depending on the brightness, 2m micro USB cable LIFETIME GUARANTEE: with this manufacturer guarantee, take no risk & press the Add to Cart button with confidence