Features: Silicone dust plugs are for COROS APEX42mm/46mm/APEXPro/PACE 2/VERTIX/VERTIX 2 for smart watch straps. Made of quality silicone material, safe and harmless, with smooth surfaces, soft, comfortable and durable. Protect your smartwatch charging contacts and ports from dusts, etc., extend the life of your watch and give you better experiences. Fits the charging port perfectly, easy to install and remove,remove it to charge the watch. Not only is it a dust plug, it can also decorate your phone and make it look unique. Package Includes: 10 Pieces Dust Plug Covers Specifications: Material: Silica Gel Color: Black Type: A, B(optional) Size: Approx. 32x26.5x12.3cm/12.59x10.43x4.84 inch Applicable Models: for Coros APEX42mm /46mm for Coros PACE 2 for Coros APEXPro for CorosVERTIX for CorosVERTIX 2 note: Other demo accessory is not included. Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you mind. Due to the difference between different monitors, the picture may not reflect the actual color of the item.