Yeah, as @aggi says, any universal MMCX Bluetooth cable will work with these.
I don't have any experience with much wireless stuff and definitely not any sub 100 pound wireless stuff I am afraid so can't offer much advice. I'd also consider something like this:
I recently got a Radsone EarStudio ES100 and it is fantastic. Having no wire attached to my phone whilst still retaining fantastic sound quality is a real luxury.
Yeah, as @aggi says, any universal MMCX Bluetooth cable will work with these.
I don't have any experience with much wireless stuff and definitely not any sub 100 pound wireless stuff I am afraid so can't offer much advice. I'd also consider something like this:
https://www.amazon.co.uk/FiiO-Bluetooth-Receiver-Built-Support/dp/B07D8K76F4/ref=sr_1_2?keywords=fiio+bluetooth&qid=1568210051&s=gateway&sr=8-2
I recently got a Radsone EarStudio ES100 and it is fantastic. Having no wire attached to my phone whilst still retaining fantastic sound quality is a real luxury.