2 PCS 28 LEDs PC USB LED Table Lamp Adjustable Reading Book Light With Switch Night Lights Charging Flexible For Study Lightings
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2PCS 20 LEDs USB LED Book Light Table Lamp With Switch Reading Charging Flexible Night Lights For Study Lighting PC Power BankAdvantages of LED lights:small volumeAn LED is basically a tiny chip encapsulated in epoxy, so it's very small and very light.Low power consumptionLED power consumption is quite low, DC drive, ultra-low power consumption (single tube 0.03-0.06 watts), and electro-optical power conversion is close to 100%. Generally speaking, the working voltage of LED is 2-3.6V, and the working current is 0.02-0.03A; that is to say, it consumes no more than 0.1W of electric energy, and the same lighting effect saves more than 80% of energy than traditional light sources.length lastingSome people call the LED light source a lengthevity lamp. It is a solid cold light source, encapsulated by epoxy resin, and there is no loose part in the lamp body. There are no shortcomings such as easy burning, thermal deposition, and light decay of the filament. Under the appropriate current and voltage, the service life can reach 60,000 to 10 10,000 hours, more than 10 times lengther than traditional light sources.High brightness, low heatLEDs use cold light emitting technology, and the calorific value is much lower than that of ordinary lighting fixtures.Environmental friendlyLEDs are made of non-toxic materials, unlike fluorescent lamps that contain mercury, which can cause pollution, and LEDs can also be recycled and reused. There are no ultraviolet and infrared rays in the spectrum, neither heat nor radiation, small glare, cold light source, safe to touch, and belengths to a typical green lighting source.