Just a heads up for those of you with the Gear S2 sport. One of the bands on my S2 band inexplicably fell off yesterday and basically wouldn't reliably stay attached to the watch. After close inspection, I found that the 2 tiny screws in the band had become loose and therefore weren't creating enough pressure to keep the band attached to the locking mechanism on the watch. Fortunately, as soon as I found my micro screwdriver and tightened the loose screws, everything was back to normal. A word to the wise: periodically wiggle your band to ensure that the screws are still "factory" tight because your watch could simply fall off without warning. Samsung definitely needs to change the attachment design on the next generation Gear S2.