Replacement Steel Battery Back Cover Case/Sealing Ring for SUUNTO CORE Watch | eBay
DIY SUUNTO CORE BATTERY CHANGE - YouTube
Suunto Core All Black - My buddy got it for me a few Years ago. Super dependable. Needs a battery annually. It's seen U.S., Germany, Romania, Iceland, Mexico, Kuwait, and Syria. :
Amazon.com: Premium Battery Kit for Suunto Core Lumi t4 t3 and t1 Models Smart Computer Watch : Electronics
Service Kit for Suunto Core and Essential
Battery life comparisons: GPS sport watches
Suunto 9 Baro Black - GPS sports watch with a long battery life