Amazon.com: Suunto Core All Black Digital Display Quartz Watch, Black Elastomer Band, Round 49.1mm Case : Clothing, Shoes & Jewelry
Suunto Replacement Battery - CR2032 battery without cover
Suunto Core All Black battery change - YouTube
Amazon.com: Fintie Watch Band Compatible with Suunto Core, Premium Woven Nylon Replacement Sport Strap with Metal Buckle Compatible with Suunto Core Smart Watch, Black : Cell Phones & Accessories