Flexible Materials The outer material is TPE, which is skin-friendly and soft, with a built-in 360-degree bendable metal hose for adjustable positioning, providing a comfortable and relaxed reading experience. 3 Lighting Colors This neck reading light offers three color temperatures: 4500K warm white light, close to natural light, ideal for nighttime reading; 3000K yellow light, suitable for phone use; and 6500K cool white light, designed for outdoor activities. 3 Brightness Levels The LED book light features three dimmable brightness levels—30%, 60%, and 100%—adjusted by pressing the switch button. The 90-degree narrow beam angle illuminates your personal reading area without disturbing others nearby. Hands-Free Neck Light This reading light provides flicker-free and glare-free illumination to help reduce eye strain. The hands-free neck design allows for convenient use during tasks such as maintenance, fishing, climbing, car repair, knitting, and more. Rechargeable 1000mAh Battery Equipped with a built-in 1000mAh rechargeable battery, this book light lasts up to 8 hours at full brightness and up to 60 hours at the lowest setting on a full charge, minimizing the need for frequent recharging.