Mighty Bright 42614 TravelFlex Book Light, Green Bright white, energy-efficient LED Durable LED lasts 100,000 hours - no replacement necessary Precisely engineered optical grade lens spreads light evenly Sturdy, slim clip grips almost anything Adjustable neck holds the light securely in place Bright white, energy-efficient LED Durable LED lasts 100,000 hours - no replacement necessary Precisely engineered optical grade lens spreads light evenly Sturdy, slim clip grips almost anything Adjustable neck holds the light securely in place