Xiaomi USB LED Light is a small item but very convenient for everyday use.
You can connect it to any USB port, like you PC, tablet, smartphone or just the power bank and get the lighting in the dark.
Now using this coupon you can buy this product only for USD $3.99 with free shipping.
P.S. In previous deal I published many users asked also for a 16000 mAh Xiaomi power bank deal, so predicting the questions I can say that the shop is planning to make some deal for this item, too, in the nearest future.
smartphones have USB ports?
Also, LOL once again at "genuine xiaomi" lololololooloololo