Giant deal knocks latest wireless Ring Battery Doorbell 2K to just $40 (60% off, all-time low)

The early Prime Big Deal Days sale has now been updated with a series of new deals. We have already highlighted the new all-time lows on the latest Ring 4K smart doorbells at $100 off, but Amazon is also offering a giant 60% discount on the latest wireless Ring Battery Doorbell 2K at just $40.  more…