Packaging, Weight, Cable, and Feet
Aside from the mouse, one finds a wireless extender, USB Type-A to Micro-USB cable, and quick start guide in the box.
My scale shows around 125 g (+/- 1 g), which is largely in line with the weight EVGA cites. Ten buttons in total, two additional LOD sensors, and a 900 mAh battery no doubt all add up. Compared to the X17, most if not all of the weight comes from the added battery. Next to mice such as the ASUS ROG Gladius III Wireless at 89 g or ROCCAT Kone Pro Air at 73 g, the X20 comes across as exceedingly heavy.
The X20 features a regular braided USB Type-A to Micro-USB charging cable. In terms of flexibility, it can only be described as poor, thus limiting the ability of the X20 to be used as a wired mouse, especially when compared to the charging cables found on the ASUS ROG Gladius III Wireless and Keris Wireless, ROCCAT Kone Pro Air, or SteelSeries Aerox 3 Wireless and Prime Wireless. The connector features small anchors, which result in the cable sitting very tightly. Its measured length is 2 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 is found on the underside of the mouse.
The feet on the X20 are regular black-dyed PTFE (Teflon) feet. Glide is fine. The ring around the sensor ensures CPI stays consistent upon applying vertical pressure.