Silver looks like an accessory, It goes with any outfit and makes you look stylish. b.ring Pro Smart Ring Health Management Sleep Management Titanium AI Analysis Compatible with Android iPhone Dedicated App Up to 7 days of battery life IP68 5ATM Waterproof Pedometer Ultra-lightweight Wireless charging stand included / Silver US11 (Japanese size 24-25 / Inner circumference 65.0mm) I think this size is optimal for the index, middle, and ring fingers of adult men, but if you are unsure, please purchase a size kit (around 500 yen on Amazon) to check your size before purchasing. I tried it on and it was too big for my fingers, so I'm selling it. I only put it on my finger for 2 seconds. It's brand new, just like new.