Product Information:<br><br><b>Compatible with Microsoft Surface Model: </b><br> Surface pro X/7/6/5/4/3; <br>Surface Book 3/2/1; <br>Surface Laptop 3/2/1; <br>Surface 3; <br>Surface Go; <br>Surface Studio 2/1 <br><br> </p> <p >Package Dimensions: About 8.27 x 2.36 x 0.71 inches <br /> Pen diameter and length: About 0.38 x 5.89 inches <br /> Pen Weight: About 0.5 ounces </p> <p >Package Content : </p> <p >1 x Active Pen (with a tip installed) <br /> 2 x Extra Tip Refill <br /> 1 x Refill Clip <br /> 1 x AAAA Battery