From the previous house where I ran a cable from 1st to third floor. I think it's 30m but a rough overarm measurement confirms it's at least 25m. I can double check if the extra metres are a necessity for someone. It's blue... and it's useless to me.
5E patch cable - # R7J304
Also - for an extra £1 you can have a BN 3.5mm Speaker and headphone Splitter as shown in the picture - bought in error and paid more than double that price...
- Liddle ol' me