As SUNMI’s first smart terminal with SUNMI OS based on Android 11, V2s is equipped with an upgraded quad-core 2.0GHz CPU and 2G RAM +16G ROM memory and demonstrates enhanced operating speed*.
The built-in 3500mAh removable battery enables a smooth and long-lasting experience.
Beyond performance Dual printing for ticket and label printing, with SUNMI's label position auto-detection algorithm for more accurate printing.
A new movable fixator has been designed to enhance paper roll installation and make it more stable. 
Ticket and label printing
Upgraded to a professional 2D scan engine, to read 1D/2D barcodes even if scratched, folded, or stained.
2D scan engine
Rubber seals added to the edges of the paper bin, charging port, and earphone port prevent water, oil, and dirt damage.
Reinforced protection to resist 1.2m drop *.
 
https://www.sunmi.com/en-US/v2s/