Guaranteed for One Full Year - High Capacity 1200 mAh Battery Compatible with Logitech Craft Wireless Keyboard - Model Y-R0064 How-To Video shows you exactly how to open your device with the included electronics opening tools to successfully replace your battery Includes Step by Step Video Instructions, Special Electronics Tools, and Long Lasting Battery Battery replacement Kit comes with EVERYTHING you need to replace your battery! Replace your Logitech Craft Keyboard Battery or Keep an Extra Battery on hand as a backup. This kit comes with an Extended Capacity 1200 mAh, Lithium-Polymer Battery that offers up even more up time than your original. Works in your Logitech Craft Wireless Keyboard. You get a New Battery, Tools (necessary for installation), Video Instructions and You also get a full One Year Guarantee exclusively when you purchase our Logitech Craft Wireless Keyboard Battery Replacement Kit.