Secateur sharpener.

Hi, have just recently joined. I have a few pairs of mid priced secateurs which need sharpening. Looking on google there are plenty of different types. Has anyone tried different styles and has a favourite?
Intending to purchase Felco secateurs but would still like to sharpen the ones I have.Thanks for reading.

I use one of these, they seem to work quite well.

https://www.amazon.co.uk/Multi-Sharp-Secateur-Pruner-Lopper-Sharpener/dp/B0001OZH7G/ref=sr_1_44?adgrpid=54926570522&hvadid=259071321022&hvdev=t&hvlocphy=1006907&hvnetw=g&hvqmt=e&hvrand=15846084783544734011&hvtargid=kwd-316855754351&hydadcr=29353_1792268&keywords=felco%2Bsecateur%2Bsharpener&qid=1706899314&sr=8-44&th=1

Hello I use a file to take any Nick's out of the blade then use an old broken scythe stone to rub the edge up to  sharp then use a leather belt to strop the back of the cutting edge,if you use a belt to hold your trousers up it's always with you    jezza