If you have wide feet, order the B(M)--Do NOT size up. With the level of modularity there only thing that would need to change would be the opening of the watch stand and it would be just as compatible with everything Samsung as it is everything Apple. So I keep the left joystick bare [no thumbgrip]. Extremely high quality, very comfortable. So happy I bought these! It works, the buds fit and they charge. 5 and went with the sz8 instead and wasn’t disappointed a bit. Much smaller than advertised. Let me first say, there is no way you could buy all these spices (20), in attractive sealed bottles with a pretty stand for $38. I have been skeptical regarding this purchase and have been extremely happy, mind you only had them for a few days.