Dual-color reversible design with patented connectors provide 3 ways to wear it with ease of switching colors in a single flip, Refined connector and tapered body to better match with Watch Ultra, Strong magnetic attachment is tested to withstand up to 1.2KG of pull test and supports easy length adjustment for the perfect fit, Made to be waterproof, washable and comfortable on your wrist with its smooth silicone material, Compatibility: Apple Watch 49/45/44/42mm, Materials: Silicone and stainless steel