K5 motor unit is a good deal smaller than that in K3, but from the same maker. K5 is essentially a downsized K3 in a package which may have wider appeal.
Yours,
Jonathan
Our OMA mat is made from pure polycrystalline graphite, not one of the newer graphite materials such as graphene. As such, if you look carefully you can actually see the crystalline structure of the graphite, which is basically pure carbon. All the other companies use a synthetic substance which...