I bought it. I don't recommend it. I get eyestrain with every eink device i tested and I tested a lot of modern and even 2010 devices with and without led. Every one gives me little eyestrain compared to when you watch into NIR lamp. So i bought it and it gave me less symptomps than eink but the no backit option is tooo dark. You cant see anything clearly on screen and when you move closer towards the light it don't help much but now you have a lot of painfull reflections on your screen. Backlight is using pwm, temporal dithering or both because when I turn it on it gives instantly eyestrain. I don't recommend it.