About this item Multiple Modes: Support 26 color modes, support mode customization, support brightness adjustment and fill light adjustment, eyes and suitable for tablet reading. Work for More Than 4 Hours: The amplifier is equipped with a 1500mAh lithium battery, which can work continuously for more than 4 hours, with a long battery life, and has a power saving function to prolong the battery life. A Variety of Functions: Electronic reading aids with memory function, flashlight function, support AV can be connected to TV to create better visual effects. 3.5inch HD Amplifier: 3.5inch HD color LCD screen with 960x240 resolution, advanced design without delay, perfect reading. Magnification: The amplifier supports 2X to 32X stepless magnification, and the magnification can be adjusted according to your needs, allowing you to read clearly.