This is only Strap. ( WATCH IS NOT INCLUDED ) #19mm watch band compatible with Most smart Watch those support 19mm strap size #UNIVERSAL FIT: Full lenghth is approximately 8 inch, designed adjustable to fit wrists of 5.75 inch to 8 inch in circumference and there's always a hole for you no matter your wrist is large or small. Fits in NOISE COLORFIT PRO 2 & BOAT STORM SMARTWATCHES #EASY TO REPLACE: No tool required. Simply slide quick release lever with your finger to attach and release the watch straps #SKIN FRIENDLY AND BREATHABLE: Made of high tensile silicone and polished stainless steel buckle, super soft, skin friendy, and easy cleaning. What's more, the double loops and back special textured breathable design can effectively prevents sweat and slipping while exercise