Tailors of Distinction - Whether they are are functional or not, a suit jacket will have buttons on the sleeve. A suit jacket with sleeve buttons that come undone (surgeons cuffs) is
Este Mar | Mens fashion suits, Mens fashion, Menswear details
The Problem With Functioning Sleeve Buttonholes - The Fine Young Gentleman
How many buttons on your jacket sleeve? | Styleforum
10 Suit Jacket Style Details Men Should Know | Different Types Of Suit Jackets
Why are there buttons on suit jacket sleeves? Here's what they are for
Suit Jacket Sleeve Buttons: Number & Styles
What Are Surgeon Cuffs? - Mister Singh's Fashion Gallery
Why are there 4 buttons on suit sleeves? - Quora
Suit Buttons: Everything You Need to Know - Hockerty
Just picked up a suit and noticed that when they lengthened the sleeve the buttons are now farther from the sleeve opening compared to my other suit. Looks a bit odd to