I bought this on a gamble since I'm the first reviewer. After much studying of the other BT mice available, I decided I didn't want to spend $50+ on a BT only but I wanted an Arc mouse to go with my super thin new laptop. Other mice reviewer reported frequent BT disconnects so I wanted dual mode. If this one stays reliable, it will be a good choice for a lower price.
I like the Arc functionality that I think is unique from others. This one has a 180 twist action in the middle rather than a bending action so it goes from a minimal curvature in storage mode to a more dramatic curvature in use. See the video.
Let's hope it proves good over time.