Radiomaster Radio Transmitter Neck Strap for TX16S TX16S SE TX18S Frsky X9D Plus X10 Jumper T18 RC Transmitters
https://www.vogueparade.com/shopping/EN/200001385/1/1005003202155713/radiomaster-radio-transmitter-neck-strap-for-tx16s-tx16s-se-tx18s-frsky-x9d-plus-x10-jumper-t18-rc-transmitters//