My adidas watchband is broken where do I can get the new one

I've never seen an adidas watch, but I'm assuming it has springbars like just about every other wristwatch does. Find a millimeter ruler, and measure the gap where the springbars hold the band to the watch--it should be somewhere between 14-22mm, depending on the watch. That will tell you what SIZE to buy, because bands are sold by width--12, 14, 16, 18, etc. Any store that sells watchbands, can find you one that will fit your watch; and some of them will even replace it for you--free of charge!