Packaging

Aside from the mouse, one finds a USB Type-C to Type-A cable, wireless dongle, sticker, and quick start guide inside the box.

Weight

My scale shows around 122 g (+/- 1 g). No matter how one slices it, the M991 Enlightenment is a heavy mouse.

Cable

The M991 Enlightenment comes with a braided charging cable (USB Type-C to Type-A). In terms of flexibility, this one can only be described as seriously stiff. As such, I consider this cable unusably stiff for wired use. Its measured length is 1.70 m. The cable has a ferrite bead attached.

As the M991 Enlightenment lacks a wireless extender, the wireless dongle needs to be plugged directly into a USB port. When doing so, as per Intel's documentation, it is strongly recommended not to use a USB 3.x port, as ports of this type may introduce interference, possibly adversely affecting wireless operation. A storage compartment for the wireless dongle is located on the bottom of the mouse.

Feet

The feet on the M991 Enlightenment are black-dyed PTFE (Teflon) feet. Thickness is below average and glide decent.