CMF is a new sub-brand of UK-based Nothing dubbed as Colour, Material and Finish in left to right order. It aims to provide affordable devices such as wireless earbuds, smartwaches, etc.
source https://zeenews.india.com/technology/cmf-by-nothing-affordable-sub-brand-launching-on-sept-26-in-india-whats-full-form-and-how-is-it-different-2663349.html
source https://zeenews.india.com/technology/cmf-by-nothing-affordable-sub-brand-launching-on-sept-26-in-india-whats-full-form-and-how-is-it-different-2663349.html