Cateye replace halogen with LED

[100SRV]

Hi,
I've an old Cateye front light set which, besides the heavy lead-acid battery is fine. I wondered if there are LED replacements for the JR-N halogen lights? A quick Google search was not much use but I'll try again later.

[100SRV]

A search leads me to think these JN-R are also called MR-11 so I'll investigate those LEDs.