Replacement for Polar M400/M430 sports watch,this spare band is easy and convenient to install. The replacement bracelet is designed as a soft style,which is comfortable to wear. The adjustable design makes this sports bracelet replacement band easy to fit different wrist sizes. The material of this sports watch replacement wristband is silicone,which is safe and environmental friendly. The sports bracelet band is perfect for running,fitness,office,home and so on,which is widely used. Specifications: Material: silicone. Size: 220mm*35mm. Colour: black,white,grey,red,cyan. Fitment: replacement for Polar M400/M430. Notes: The main body in not included,only strap. Due to the light and resolutions setting difference,the item's color may be slightly different from the pictures. Due to different measurement, please allow 1-3mm size difference. Please carefully check whether the compatible model is suitable before purchasing. Package included: 1x watch band.