Flexible MaterialsThe outer material of TPE is skin-friendly and soft, with a built-in 360-degree bendable metal hose, which can be adjusted at will, creating a more comfortable and relaxing reading experience. 3 Lighting ColorThe neck readinng light has 3 color temperatures. The 4500K evening light is close to natural light, suitable for reading at night, the 3000K yellow light is for watching mobile phones, and 6500K strong light is for outdoor sports. 3 Brightness LevelsThis LED book light has 3 levels of dimmable brightness, click the switch button to adjust, successively 30%, 60% and 100%. The 90 narrow beam angle makes your own private reading zone without disturbing your partner or kids beside you. Hands Free Neck LightOur reading light has no flickering or glare light, keeping you away from eye fatigue. Also the halter neck design frees your hands, you can use it for maintenance, fishing, mountain climbing, car repairing, knitting, etc. Rechargeable 1000mAh BatteryThe rechargeable book reading light has a built-in 1000mAh battery, which can last for about 8 hours after being fully charged and up to 60 hours at the darkest level. No need to recharge frequently.