TaoTronics LED Desk Lamp (Ultra-slim, Aircraft-grade Alloy, Eye-caring LED, 6 Brightness + Three Color Modes, Smart Memory Function, Smart USB Charging Port, Energy-efficient) - Silver Gray

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•User Manual for TT-DL22

TT-DL22_User Manual.pdf  

FAQ

I tried to unplugged/plugged back in. It does not even turn the light back on by itself, so you have to repress the power button by yourself.
17 3/4" height, from the table the lamp sits on up to the top of the upper elbow joint where the light usually extends outward at a 90 degree angle.
Unless one of the modes is "off" I count only two modes - fluorescent and incandescent. (Green cast, yellow cast). Very nice.
I love this lamp but I can't tell you whether there's a 220v version or whether the lamp itself will handle 220v. The plug was clearly for US 120v
No sleep timer, not that I have seen anyway (but I didn't buy it for that).