Packaging

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

Weight

My scale shows around 80 g (+/- 1 g), which is exactly in line with the weight cited by SteelSeries. A very good weight, especially when considering its medium size and that the Prime Wireless lacks externally visible holes. Compared to several of its right-handed ergonomic peers, such as the ASUS ROG Gladius III Wireless at 89 g or ROCCAT Kone Pro Air at 73 g, the Prime Wireless does well.

Cable

The Prime Wireless comes with a paracord-like, braided charging cable (USB Type-A to Type-C). There is no anchor at the mouse-end of the cable, so the cable may come loose during use, though it is unlikely given how tight it sits. In terms of flexibility, it is roughly on par with the charging cable of the Aerox 3 Wireless; i.e., not as flexible as the charging cables of the ASUS ROG Gladius III Wireless or Glorious Model O Wireless, but much more flexible than that of the Razer DeathAdder V2 Pro. Accordingly, the Prime Wireless can be used as if it were a wired mouse with barely if any perceivable difference in terms of handling compared to an actually wired mouse. The cable is 2 m long.

The charging cable also functions as an extension cable if used in conjunction with the wireless extender. The wireless extender can be used to keep the distance between dongle and mouse as short as possible. Since the mouse itself lacks a storage compartment for the dongle, the extender can also simply be used as something to attach the dongle to, which reduces the likelihood of the dongle being lost when traveling. That having been said, the dongle is huge, so losing it is not as likely.

Feet

The feet on the Prime Wireless are white-dyed pure PTFE (Teflon) feet. Glide is very good. The ring around the sensor ensures CPI stay consistent upon applying vertical pressure. Indents next to the feet make them easier to remove.