The rubber band and stainless steel case kit replacement perfectly matches GA2100 / GA2110, make your watch durable and keeps shiny all the time. The re-customized steel bezel is perfectly combined with the strap. The upgrade and transformation of this series can be completed by the players themselves, and it is very simple to replace. This product only supports GA 2100/2110 original watch upgrade, please make sure before you place the order. This version is One-piece Strap Perfect, the case and strap have been connected and assembled, no need to separate.