Feature:1. EYE PROTECTION: Our reading light uses 5500K colour temperature white light, no screen flicker, 3 levels of brightness adjustment to take care of your eyes.2. BUILT IN BATTERY: Our reading light has a built in 450mAh lithium polymer battery that lasts 3 to 4 hours on a full charge.3. SMALL AREA LIGHTING: This reading light from us illuminates the smallest areas with a light bright enough to illuminate them without disturbing your sleeping partner at night.4. LIGHTWEIGHT: The neck light is ergonomically designed to free your hands and ensure the safety of your eyes, extremely convenient and practical, enjoy reading and jogging at night.5. COMFORTABLE TO WEAR: The ultra soft silicone maximises wearing comfort and swivels powerfully 360 for easy selection of the best angle.Specification:Item Type: Neck Reading LED LampMaterial: Silicone, ABSSize: Single arm length Approx. 31cm / 12.2inInternal Battery: Li polymer 450mAh (included)Light Source: White lightBrightness Levels: 3 levels of low, medium and high brightnessWorking Time: 3-4H (determined by brightness)Charging Method: USB micro 5VWeight: Approx. 128g / 4.5oz.Package List:1 x Neck Reading LED Lamp1 x Instruction1 x USB Cable