Packaging
Aside from the mouse, one finds a USB Type-C to Type-A charging cable, wireless dongle, as well as warranty and safety guides in the box.
Weight
My scale shows around 96 g (+/- 1 g), which is slightly less than the weight cited by Corsair. In terms of feature set, the closest competitor is the ROCCAT Kone XP Air, which weighed in at 98 g. A good weight overall.
Cable
The Nightsabre Wireless comes with a braided USB Type-A to Type-C charging cable. In terms of flexibility, this one can only be described as supremely stiff, preventing playing while charging almost entirely. The cable is 1.80 m long.
As the Nightsabre Wireless 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 adversely affecting wireless operation. A storage compartment for the dongle is found on the underside of the mouse.
Feet
The feet on the Nightsabre Wireless are non-dyed pure PTFE (Teflon) feet with slightly rounded edges. Glide is excellent and thickness average.