These Slim JoyCon come with the latest Firmware installed & have Zero Dead Zones!
Whilst still Bigger/Better than the standard joycons, they are smaller / slimmer than others on this page. (see pictures for comparison)
Controllers will be charged whilst Docked (Yes, they still fit fine in the dock) or charge via a Supplied 1 x USB-C cable. (Check my store for Dual USB-C charge cables)
Built-in 500 mAh batteries on each side, allow you to play for approx. 8-10 hrs nonstop after fully charged and only take 2-3hs to be fully charged.
(FYI BinBok own DOYOKY = Same hardware. These are NOT compatible with Amiibo