NEO SMARTPEN M1 Bluetooth Digital Pen Compatible with iOS, Android, Smartphones, Tablets, Windows (Grey) Bundle with PaperTube Video Creation Kit

I am returning the product today and will try to get another unit. The first few days I loved it and show it off to everyone I know. But then the last few days the pen won't capture fully what I wrote anymore. The digitized was choppy (some strokes were visible, some strokes weren't). I tried it several more times by holding it at an eligible angle, writing slow, charging it fully, etc. But the problem persists. I think I have a defective unit so I am sending it back to get another one.The pen is lightweight, smaller, and less noticeable compared to the Livescribe pens (which I owned several since the Pulse). The printable Ndot papers work well for what I need. And the Paper Tube idea is ingenious! But all of that potential requires a working pen. Hopefully, I can get a workable unit to upgrade this rating.UPDATE: I bought the older (and more expensive) N2 version of the pen for now. Hopefully, the M1 will get fixed and refined soon since the N2 is much chunkier in look and feel.