Sureflex80 provides 80 lumens of warm light, via energy efficient LEDs, making it the most powerful quality booklight on the market. It provides a broad field of light that is clear, consistent and easy on the eyes, and is built for large pages and areas that need plenty of light. Here is why you will love it: - The most powerful booklight on the market: the Sureflex80 is the perfect all-purpose booklight and is available in a battery operated or rechargeable model in 3 colourways for each model (or colorways for the us). Its 80 lumens of warm light make it the most powerful quality booklight on the market. Both models feature two brightness levels by clicking a button on the light head. - Lightweight, portable and multi-purpose: the durable metal gooseneck adjusts to any position, and the secure padded clamp opens to 25mm making the light perfect for camping, reading, studying, on music stands, as an automotive repair light, a computer light, for tasks, crafts & hobbies, travel, and for reading in bed without disturbing your partner. - Long lasting battery: for the regular model, 3 high quality aaa batteries are included (up to 20 hours of battery life), and for the rechargeable model, a highly efficient lithium battery is included which charges fully in 2-3 hours and gives up to 7 hours of battery life, with the indicator light showing when fully charged, and micro usb cable included. - Precision engineering: their precision engineered optical grade lenses are specifically designed to distribute a wide field of consistent lighting with no hard edges. The precision lenses work in conjunction with high cri leds (high colour rendering index leds) to provide better colour rendering and even light output.