Product Description Light Source: 16Pcs LED Lamps Color Temperature: 5500K - 6000K Power Supply: 600mAh Rechargeable Battery Full Charging Time: Approx. 4 Hours Working Hours: 5H (High), 9H (Medium), 12H (Low) Color: White & Black Key Features: 1. Eye-Caring Clip-On Light - Equipped with a secure padded clamp and infinitely flexible neck, this lamp allows you to adjust the angle for optimal viewing. 2. Reliable Illumination with Care - The book lamp features 3 adjustable light intensity levels, enhancing visual clarity to reduce eye strain and boost productivity. Use the low mode for a subtle bedside lamp that wont disturb your partner. 3. Cost-Effective Rechargeable Battery - Enjoy wireless reading for up to 24 hours with the built-in 600mAh rechargeable battery. Compatible with USB ports, power banks, and adapters (adapter not included). 4. Stylish Design & Wide Clamp Opening - Designed by German designers, the sturdy clip opens up to 4.5cm. The elegant white finish and flexible neck give it a swan-like appearance, while the anti-slip rubber pad base makes it perfect as a desk lamp. 5. Versatile Use - Ideal for camping, children's reading, studying, music stands, car repairs, computer work, hobbies, and reading in bed without disturbing others. Provides stable, evenly distributed light without hotspots or flicker.