Unboxing: Bigme B751c - Pocketnote 2 Color - Compact 7" Color E-Ink Tablet - Smart Notebook eReader?

Unboxing + first impressions look @ Bigme 7'' B751C Color Epaper notepad with case and stylus.
Find it here: bit.ly/4dUCXRn
Website: store.bigme.vip/?ref=paphnzxr
Details:
The B751 Color features a 7-inch E INK Carta 1200 e-paper display with a resolution of 1264×1680 with 300 PPI for black and white content. The colour screen provides a resolution of 632×840 with 150 PPI. You can display text in ebooks, websites and other content in black and white and get tremendous resolution. Still, if you are freehand drawing or editing PDF files, reading comics, magazines or other content, you will get a vibrant, colourful experience. Bigme said the display is flicker-free, ensuring distortion-free text and images at all times. The display also comes with 36-level adjustable warm and cold LED lights, which can be blended for an optimized screen when reading in the dark.
Kaleido 3 Color Eink Screen--Bigme Self-developed Auto Clean Ghosting Technology for Better Display and Fast Refresh
Level up Your Reading Experience with Split Screen, Annotation, 36 Levels Adjustable Glowlight (backlight)
B751C Ereader with Stylus, Sync Data, Meeting Record with Voice to Text Function
Specs:
B/W: 300PPI, Color: 150PPI
Included case and pen (pressure sensitive)
Auto ghosting elimination
CPU: Octa-Core 2.3GHZ
Camera:No Camera
RAM/Internal: 4GB+64GB
Physical Page Turn Buttons: YES
MicroSD: Yes (1TB)
Fingerprint Unlock
2.4G/5G WIFI ,BT5.0
Battery capacity: 2300mAh
OS: Android 11 OS
Global handwrting
Front Light - Yes
Length：136.2mm
Width：155mm
Thickness 7mm
Weight：212g
About the brand:
Bigme is focued on the research and development of e-ink tablets from 2008. Our products stand out with features like notes-taking and transcription of 36 languages. It has taken the lead in creating a leading brand in the industry of color ink screens from 7.8inch and 10.3 inch.
Bigme B751c review, Android ereader, E-Ink Tablet, color ereader, color E-Ink, ePaper tablet, best budget ereader, ereader for comics, Kindle 6" Basic / Kindle Scribe / Remarkable 2 / Onyx Boox Note / Supernote / Fujitsu Quaderno / Sony Digital Paper / Pocketbook InkPad Color / Kobo Clara Color / Hisense / Mobiscribe Wave alternative

[@andrew41980]

Is it a aaa battery in the pen?

[@nicomal]

I think he said AAAA battery