For 20mm-Compatible Garmin Watches, 20mm Wide Band, Fits Wrists Sized 4.9 to 8.6", Buckle Closure with Metal Hardware. The Garmin Quick Release Band lets you quickly change the look and style of your Garmin smartwatch. It's 20mm wide and connects to 20mm-compatible Garmin smartwatches. Simply remove your existing band with a slide of the bar connecting it to the watch face and pop on your new one. This band fits wrists sized 4.9 to 8.6 using a series of sizing holes and a buckle closure with metal hardware.