Product description Size: 18 * 8.5 * 1.8cm Specification: Material: Metal+ABS LED quantity: 2pcs Warm+3pcs Cool white LED Power: 1W Battery capacity: 1000mAh Input voltage: DC 5V Charging time: 2 hours Package content: 1x LED Book Reading Light 1x Micro USB Charging Cord (39 inch long) 1x User Manual 1x Carry Bag 1. 3 Color 3 Brightness & Flat Switch Designed with 5 LED bulbs and 9 brightness modes in total, satisfying different light needs in daily life. Press the switch and hold for 3 seconds to change light color (3000K Warm White, 4500K Natural White, 6500K Cool White); quick click to choose brightness (Low, Medium, High). 2. Built-in Rechargeable Battery Equipped with a built-in 1000mAh Li-ion battery and micro USB port. Enjoy up to 60 hours of wireless reading on a single charge at low brightness setting (Warm, Low). 3. No Flicker & Eye Protection Flicker-free, shadow-free, and dizziness-free lighting. With 3 color temperatures and 3 brightness levels, you can choose the ideal combination for eye comfort. Soft diffused light creates a private reading environment without disturbing others nearby. 4. Portable & Multi-Use Design Compact and functional. The flexible gooseneck allows 360-degree adjustment to position the light exactly where needed. Ideal for use as a book light, bedside lamp, music stand light, computer light, desk light, or for headboard reading, camping, children's night reading, studying, keyboard illumination, painting, tailoring, DIY projects, and hobbies. 5. Adjustable Clamp Features an adjustable clamp that opens up to 4 cm. Suitable for books, computers, beds, desks, and more. The reading lamp is also convenient for camping or travel use.