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Posted by felixdoerp 2 hours ago

The Xteink X4 E-Ink Reader(blog.omgmog.net)
74 points | 56 comments
sieve 1 hour ago|
Got the X4. Put CrossPoint on it. Works like a charm. The http server accessible over wifi makes transferring books extremely simple. (Shame on the Kindle for locking everything down.) This is proof-of-concept that a microcontroller is more than enough for something like an e-reader.

I have a Kindle and a Kobo. They are sturdy devices. But the X4 is the one that is a genuine e-reader. Would not get it as my one and only e-reader though as you tend to miss the size and backlight of the larger ones.

What would I want from future iterations?

- backlight even if it compromises on battery a bit

- a bit more DPI

Everything else is good enough.

tmottabr 4 minutes ago||
There are rumors they will release a V2 Pro version with touch and backlight in the second half of this year.

They also have already announced the S4 that is basically the same device, a bit ticker with touch and backlight and running android.

kstrauser 53 minutes ago|||
I'm with you on every bit. I love my Kobo Libra 2 and it lives on my nightstand table. It's an excellent reader. The X4 with CrossPoint is an alright reader, but I've been chewing through books on my morning commute because it fits in my jacket pocket and I can have it out on the train without bumping into other people.

It's not the best reader I own, but it's the best reader I have on me at any given moment when I'm not laying in bed.

sieve 30 minutes ago|||
> It's not the best reader I own, but it's the best reader I have on me at any given moment

This. The form factor is almost the right one for an e-reader. The battery lasts for weeks. It is so open that you could probably write your own firmware for it based on CrossPoint or similar for your own needs.

Needs some iterative development while ruthlessly culling requests for random features.

criddell 44 minutes ago|||
Does your reading position sync up between the two devices?
ihowlatthemoon 29 minutes ago|||
Not the commenter you were replying to, but I have both a Kindle and a X4. No, it does not, but searching for a unique enough phrase (just two or three words) on the current page gets you there fast enough.
crtasm 11 minutes ago||||
If you install koreader on the kobo, crosspoint on the x4 and create a free koreader sync account (or host your own sync sever): yes - but on the x4 you need to manually trigger syncs

Alternatively if you wish to stick with the stock Kobo reader app it is possible to sync via a https://grimmory.org/ instance

0cf8612b2e1e 13 minutes ago|||
As someone who also juggles multiple readers, I find it easier to have a different book per device. Otherwise I would waste too much time trying to sync between the two.
pluralmonad 45 minutes ago|||
Not being lighted is what has kept me from trying it. If they do add lighting I hope it is a front light and not a back light. Hard to beat a front lit e-ink display for reading. Bonus points for warmth settings.
HumblyTossed 53 minutes ago||
All of this. It's a solid device. I like it. It won't replace my Kobo, but it has it's place in my tech lineup.

Will buy the next one if it has a light.

criddell 29 minutes ago||
I've looked at this device and I wonder how good the layout engine is. Screenshots never show text with any hyphenation going on which makes me wonder if it even supports hyphenation.

One of the images on the Amazon page for the reader has somebody holding one beside their laptop and if you look at the screen, it looks terrible. There are even words jammed together ("would be most suitable forthe job").

I love that it has physical buttons though. My reader is the Kindle Oasis and the buttons are one of my favorite features of the device. The Oasis layout engine and typography are both pretty good and I wonder if the X4 would end up feeling like a big downgrade.

bouk 23 minutes ago||
The alternative firmwares give you a lot more options in this, stock is OK in layout
lisnake 25 minutes ago||
Custom firmwares support hyphenation
rcarmo 24 minutes ago||
I got one last April, and love it: https://taoofmac.com/space/reviews/2026/04/04/1800

I also built two quick hacks for it that people might like:

- https://github.com/rcarmo/bun-readlater-epub

- https://github.com/rcarmo/bun-opds-server

broabprobe 28 minutes ago||
I love the X3, light enough I can carry it around without noticing it. Battery lasts forever. I don't feel the need for a backlight at all, I love how simple this is.

I know people favor the X4 for the usb-c, and I'm all for universal charging cables. But in my experience the usb port is often the first component to fail in something like this. And that seems super annoying to replace. The pogo pins on the other hand are unlikely to fail. And the cable is not proprietary, you can get compatible cables on Amazon/etc.

miohtama 1 hour ago||
For those who can afford it, I can recommend the Boox Note for the ebook reader. It comes with full Android, so you are not limited to books but can read news, Hacker News, and other doomscrolling that fills the Internet.

In a pinch, you can also connect it to a Bluetooth keyboard and use it as a development terminal. SSH terminal looks gorgeous on e-ink.

BeetleB 1 hour ago||
> It comes with full Android, so you are not limited to books but can read news, Hacker News, and other doomscrolling that fills the Internet.

That sounds like an anti-feature. When I first bought an ereader over 15 years ago, I intentionally chose one that didn't support Wifi for this very reason. I want it primarily for reading documents.

But then again, I guess Boox is meant more to be a tablet than an ereader.

Also, genuinely curious - does having Android reduce the time between recharges? As an example, I read a whole book over 7 days, and didn't need to charge my Kobo (and modern Kobo battery life is not great).

I want Kobo to release an 8" color, but don't know if they ever will. I was considering Boox as an alternative, but I worry about battery life and Android. I wonder if my worry is misplaced.

criddell 42 minutes ago|||
A problem with Boox that some here care about is their non-compliance with the GPL. Their devices run modified GPL software and they have (AFAIK) refused to release their modifications.
dewey 1 hour ago|||
Sounds like the opposite of what I want for my ebook reader.
imzadi 1 hour ago|||
If you are looking for a more affordable option, I have a Musnap Ocean C. It's a little bare bones, but still pretty good. It's a color e-ink display and you can get an optional pen that lets you take notes. I only use it for books and documents, though. It's the best option under $300 that I have found if you want something that is color and can take hand written notes.
koziserek 1 hour ago||
the point of having an e-ink reader (at least for me and anybody I know who actively use such device), is to read things, so keeping doomscrolling options is *not* an advantage..
ApolloFortyNine 1 hour ago||
I got one, it's pretty cool that it's small enough to just magnet to the back of your phone. If your someone who needs to use a large font on their ereader to read its certainly not for you, but the screen size is good enough for regular sized text.

It's also cool that it's chip is just an ESP32.

WillAdams 48 minutes ago|
I would like to see a phone case which this inserts into --- bonus points if there's a way to use it as a status display for the phone for use in bright/direct sunlight.
naravara 30 minutes ago||
The obvious innovation is to just make the back of the phone case an eInk display. No need for all the bulk when you can merely have an app on your phone that controls the case-display and the phone can output whatever reader app you want to it like a companion/IoT device.

Or it can be a little bit bulkier and just be a dedicated ereader that is shaped like a phone case. Either way works.

aanet 37 minutes ago||
I've been eyeing the Xteink Reader but cannot decide between the X4 (4.7" diag) and X3 (3.7" diag).

FWIW, the X3 requires a pogo pin cable, while the X4 requires a standard USB-C.

Anybody got any recommendations?

Thanks!

ihowlatthemoon 25 minutes ago||
Go for the X4. Neither supports USB file transfer, so having USB-C charging is convenient without additional things to worry about. Bigger screen is also better if you're a fast reader. The faster you read, the more your reading speed is limited by the page turn speed.
cbushko 27 minutes ago|||
I picked the X4 over X3 because the usb-c is convenient for charging (which you barely need to do)

I love it and use it every day.

5555624 11 minutes ago||
The X4. I always have a USB-C cable handy; so, i can charge it in the bedroom, at y desk, etc.
senorcrab 1 hour ago||
I've been using it for about 6 months. Very, very good - especially paired with anna's archive.

IT IS VERY FRAGILE! The eink screen on my first broke while in my backpack. The company is generous, I bought a new one and they gave 35% off and included all accessories (reading light, case, extra protectors). Highly recommend.

dfee 31 minutes ago||
i bought a pocketbook era lite recently, and it's a bit too locked down for my tastes - though usable. i kinda just want a dumb appliance. actually, i want a linux appliance. this probably sounds very "not productized" to a PM, but 99% of what's on there i don't want: a book store, games, etc.

i wish there was just an SDK for building apps (i'll vibe code towards a great epub experience, i'm fine with that). and, i'm fine plugging it in via USB or even SCPing files over wifi. but, it sends my reading progress to a server every time i use it which is highly annoying and concerning. however, the form factor is sufficient.

i guess i was hoping it'd be more aligned with steam's direction with their steam machine.

camel-cdr 27 minutes ago|
> i wish there was just an SDK for building apps (i'll vibe code towards a great epub experience, i'm fine with that)

That seems to be what crosspoint-reader is: https://github.com/crosspoint-reader/crosspoint-reader

NDlurker 1 hour ago|
I've had the X3 for a month and I love it. It's so small I forget it's in my pocket and have almost washed it a couple times. I'm working on custom firmware for it, so I ordered an X4 when they had the 20% off sale to test on there too.
timw4mail 35 minutes ago||
As a crazy person with both, I have mixed feelings between them.

In favor of the X3:

- Crisper text

- Whiter display

- Slightly better battery life

- Top-mounted power button (subjective)

In favor of the X4:

- Larger display

- Plain USB-C charging

- Slightly better custom firmware support

- Backward and forward button on the same side (subjective)

automathematics 49 minutes ago||
link the custom firmware!
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