Packaging, Weight, Cable, and Feet

Packaging

Aside from the mouse, one finds a braided charging cable (USB Type-A to Type-C), wireless dongle, wireless extender, set of grip tape, set of replacement feet, stickers, gold coin, and quick start guide inside the box.

Weight

My scale shows around 55 g (+/- 1 g), which is exactly in line with the weight cited by Fantech. For comparison, the similarly sized and likewise solid-shell VGN Dragonfly F1 Pro Max weighs 55 g too, whereas the similarly sized and too solid-shell Endgame Gear OP1we weighs 58 g. An excellent weight.

Cable

The Helios II Pro comes with a paracord-like, braided charging cable (USB Type-A to Type-C). In terms of flexibility, the cable is below average, to where playing while charging may feel restrictive. The measured length of the cable 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.

Feet

The feet on the Helios II Pro are pure PTFE (Teflon) feet with little to no dye added. They are of average thickness, and glide is excellent. The ring around the sensor ensures CPI stays consistent upon applying vertical pressure. A set of replacement feet is found in the box.

4K Wireless Dongle

As a separate purchase, Fantech offers the 4K Wireless Dongle, which as of this review is only compatible with the Helios II Pro. After pairing the 4K Wireless Dongle with the Helios II Pro, polling rates of 2000 and 4000 Hz will become available. Pairing is possible through the software by opening the settings dialog and selecting the pairing tool there. However, only one dongle at a time can be paired to the mouse, so after pairing the Helios II Pro to the 4K Wireless Dongle, the included dongle will no longer work, and vice versa.