Packaging
Aside from the mouse, one finds a braided charging cable (USB Type-A to Type-C), USB full-speed wireless dongle, USB high-speed wireless dongle, quick start guide, set of replacement feet, set of grip tape, and sticker inside the box.
Weight
My scale shows around 55 g (+/- 1 g), which is almost exactly in line with the weight cited by Darmoshark. For comparison, the larger M3 weighs 58 g, albeit without RGB lighting, whereas the similarly sized VGN Dragonfly F1 Pro Max weighs the same. An excellent weight.
Cable
The M3S Varun comes with a paracord-like, braided charging cable (USB Type-A to Type-C). In terms of flexibility, this one is very similar to the charging cable of the M3 4K, and likewise slightly above average. Accordingly, playing while charging is possible without feeling overly restricted. The measured length of the cable is 1.95 m, and a ferrite bead is attached.
The charging cable also functions as an extension cable if used in conjunction with the wireless extender. A storage compartment for the dongle is found on the underside of the mouse.
Feet
The feet on the M3S Varun are white-dyed pure PTFE (Teflon) feet with slightly rounded edges. Glide is very good and thickness average. The ring around the sensor ensures CPI stays consistent upon applying vertical pressure. A set of replacement feet is included in the box.