Packaging
Aside from the mouse, one finds a USB Type-A to Type-C charging cable, wireless dongle, wireless extender, set of stickers, and quick start guide in the box.
Weight
My scale shows around 53 g (+/- 1 g), which is slightly less than the weight cited by Razer. For comparison, the larger DeathAdder V3 Pro weighs 63 g, the similarly sized ASUS ROG Keris II Ace weighs 54 g, and the similarly sized, open-bottom LAMZU Thorn weighs 54 g. An excellent weight.
Cable
The DeathAdder V3 Hyperspeed comes with a rubber charging cable (USB Type-A to Type-C). In terms of flexibility, this one is below average, to where playing while charging without feeling restricted would be difficult, even if the cable were longer. Its measured length is 1.15 m.
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. A storage compartment for the dongle can be found on the underside of the mouse, though a compartment door is not present.
Feet
The feet on the DeathAdder V3 Hyperspeed are non-dyed pure PTFE (Teflon) feet with slightly rounded edges. Glide is excellent and thickness average. The ring around the sensor ensures CPI stay consistent upon applying vertical pressure. Compared to the DeathAdder V3 Pro, the footprint has been increased significantly.