Replacement watch band compatible For Xiaomi Mi Band 4/Mi Band 3 ONLY.Note:without Activity Tracker. <br/> Material: 304 stainless steel with zinc alloy case.comfortable to wear,eco-friendly and safe for the human skin.Length: 145-215mm,length is flexible to adjust according to your wrist size. <br/> Made of high-quality,environmental,waterproof,durable and healthy material,Screwless simple to use.Exquisite stainless steel with smooth finish for a sporty look. Comfortable and durable. <br/> Because this product made of metal, stainless steel, If you are allergic to nickel, please don't use this product. <br/> SATISFACTION GUARANTEE:1-year quality guarantee is provided. If you have any questions, please contact us without hesitation, we will reply you asap. <br/><br/><br/>Package: <br/>1pc Replacement Band for Xiaomi Mi Band 3/Mi Band 4 <br/>