They last about a month if you clean and dry them.
Gillette Fusion5 Men’s Razor Handle + 2 Blade Refills
https://www.amazon.com/Gillette-Fusion5-Razor-Handle-Refills/dp/B06X9NWGBX/ref=sr_1_6?dchild=1&keywords=Gillette+Fusion&qid=1608227239&s=beauty&sr=1-6
Oh my! 5 blades! I have tried a 1st gen 3 blade, but my face stopped counting at 2.