Luminous Efficiency and Flexibility: This neck reading light offers a luminous flux range of 249-2000, providing ample brightness for various reading environments. Its flexible arms allow for easy adjustment and positioning to direct light exactly where you need it, enhancing your reading experience without disturbing others. Long-lasting Battery with USB Charging: Equipped with a high-quality lithium metal battery, this book light is designed for extended use between charges. The USB rechargeable feature ensures you can easily power it up through a laptop, power bank, or USB charger, making it ideal for travelers and avid readers. Eco-friendly and Safe: Free from high-concern chemicals and smart device functionalities, this reading light offers a safe and environmentally friendly option for your lighting needs. It does not require additional batteries, as it includes a built-in rechargeable unit, ensuring convenience and reducing waste. Durable and Portable Design: Crafted from sturdy materials and designed to be lightweight and portable, this LED neck light is perfect for on-the-go use. Whether you're camping, traveling, or simply reading at home, its durability and 12-month warranty guarantee reliability and satisfaction. Versatile and User-Friendly: Not just for books, this flexible lamp can be used for a variety of tasks requiring focused light. Its 5W wattage ensures energy efficiency, while the adjustable brightness settings cater to different lighting needs, making it a versatile tool for any situation. Color: Black Material: ABS Package Contents: 1*LED Neck Reading Light Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.