You can buy one ($25), two or four ($20 apiece) – these were originally about $60 each so a good deal for those who know what it is – note – you must have, or buy, a compatible radio – https://sites.google.com/view/otsrc/nano-qx-bnf
You can buy one ($25), two or four ($20 apiece) – these were originally about $60 each so a good deal for those who know what it is – note – you must have, or buy, a compatible radio – https://sites.google.com/view/otsrc/nano-qx-bnf