Ayotu Magnetic Clip-on LED Reading Light Lamp Flexible Arm E-Reader Light with USB Rechargeable 3 Color Temperature Adjustable Book Lights for, eBook Readers, Tablet, iPad, Kobo, Laptops etc (Balck)

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Specifications: ★The light can be switched three color temperature. ★Brightness stepless dimming. ★Brightness: 50 lumen. ★Three color temperature adjustable: 3000K-5500K-4500K. ★Power supply: 250mAh Li-Pol(included). ★Charging time: 40Min. ★Lasting time: 2~3hours once fully charged. ★Red LED is on When charging, and auto-off when fully charged. How to use: √Has the memory function of light brightness, the default is the brightness used last time. √Long press the power switch for 3 seconds to turn on the light, the light by default is 3000K color warm yellow light, and then quickly press the power switch to switch the light color:5500K white light--4500K warm white--turning off the light. √When any lamp color is bright, long presspower switch to adujust the brightness from the current brightness to 100% and loosen and then long press the ower switch to adjust the brightness from 100% to 15%. √Users can adjust the brightness according to their own needs. Review: Para leer en libro electrónico genial - La utilizo a leer en un libro electrónico y da la luz justa. Me parece perfecta porque no alumbra demasiado y no molesta a los demás cuando leo por la noche. La pinza se sujeta muy bien y es super ligera. Para leer en un libro en papel no lo veo suficiente para alumbrar las 2 hojas. Review: Cumple su cometido - Funciona correctamente. Sencillo