Bests & Worsts Reviews from Amazon

It's incredibly hard to find any specification on this light before actually purchase it, so I bought it and will share the specs with every one. 1. Voltage: AC 100-240V input DC 12V 1.5A output. 2. LED: 27 LEDs, 3 rows 9 LED for each row. 2 outer rows are white leds while the center row is yellow led. 3. Power consumption: 5-11W depend on brightness 4. Lumen: 530LM (I assume at max brightness) 5. Color Temp: 2500-7000K 6. 4 modes: (5 brightness for each mode) Reading: 4300~5300K (all yellow & white LEDs equally on) Study: 6000~7000K (mostly outer row white LEDs w/ little center row yellow ones) Relax: 4300~5300K (mostly center row yellow LEDs w/ a little white LEDs) Sleep: 2500~3300K (only center row yellow LEDs illuminate) The light is mostly good except the light can only be opened up and down and doesn't rotate sideways. Say if you wanna use it on a piano, you'd want the light head to be able to rotate. 1x 1A USB charge port on the side, which is pretty much useless since most cell phone or tablet require over 1.5A to charge in reasonable time.