Packaging
Aside from the mouse, one finds a quick start guide and warranty card in the box.
Weight
My scale shows around 59 g (+/- 1 g), which is exactly in line with the weight cited by ASUS. For comparison, the smaller Razer DeathAdder V2 Mini weighs 58 g, whereas the similarly sized MSI Clutch GM31 Lightweight weighs 60 g. A very good weight.
Cable
The M3 Gen II comes with a regular rubber cable. In terms of flexibility, this one is very similar to the cable used on the M3 (Gen I) and rather stiff. Its measured length is 1.80 m.
Feet
The feet on the M3 Gen II are white-dyed PTFE (Teflon) feet. Glide is subpar and thickness average. The ring around the sensor ensures CPI stay consistent upon applying vertical pressure.