Pen Compatible with Surface Go (Blue)

What's in the box?
Package Included:
✮1*Pen
✮1*AAAA alkaline Battery
✮2*Replaceable refills
✮1*Tool
Specifications:
-Size: 147±0.5(L)*13±0.15(W)*9.6±0.15(H) MM.
How to hook up the battery?
➤1. Rotate the top of the pen counterclockwise;
➤2. Positive pole side down, Insert the battery into it;
➤3. Return to the original position clockwise.
How to replace the Refill?
1. Use the tools in the package to gently rotate and pull out the refill on the Surface pen;
2. Find the new refill you need to replace in the package, using your hand, gently insert the refill into the pen;
3. Complete the replacement.