The NL21 TWS Earbud is the best you could afford with the little money you have. The model is called Valco NL21, which is short for the Finnish word “nappiluurit” (It is also short for Neuvostoliitto, Soviet Union). Nappiluurit means button phones, and the 21 is the year of release (Even it is late December). The design work here comes from Chinese engineers, but the sound is 100% Valco.