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 rechargeable 1000mAh Li-ion battery and micro USB port. Enjoy up to 60 hours of wireless reading time on a single charge at low brightness (Warm White). 3. Flicker-Free & Eye Protection Flicker-free, shadow-free, and glare-free lighting. With 3 color temperatures and multiple brightness levels, you can select the ideal setting for comfortable eye relief. Soft diffused light creates a private reading environment without disturbing others nearby. 4. Portable & Multi-Use Design Compact and functional. Features a 360-degree flexible gooseneck for easy positioning. Ideal for use as a book light, bedside lamp, music stand light, computer light, desk light, or for reading in bed. Suitable for camping, studying, painting, tailoring, DIY tasks, and other hobbies. 5. Adjustable Clamp Design Lightweight and portable with an adjustable clamp that opens up to 4 cm. Securely attaches to books, laptops, beds, desks, and more. Makes the reading lamp convenient for travel and outdoor use.