【Tested and Confirmed】 【Anonymous Delivery】 【Instant Purchase OK】 【Price Negotiation Welcome】 For sale: Microsoft Surface Pen, Microsoft Surface Pen, Model: 1616/1616C. This product has been tested and confirmed to be working. There are no noticeable scratches, and it is in a clean condition. A size AAA battery is included, but the remaining battery life is unknown, so please be aware of this. The button battery on the cap side has run out, so it has been removed. Two button batteries are required. Model: 319 SR527SW Mercury Lead Unused Manufacturer: muRata (About ¥1100 for a pack of 5 on Amazon) Replacing the battery on the cap side is a little troublesome, but it's easy to do. Instructions for battery replacement have also been posted on YouTube. If you have any questions, please feel free to comment. Thank you for your consideration. Compatible models: Surface Studio Surface Studio2 Surface Laptop Surface Laptop2 Surface Laptop3 Surface Laptop4 Surface Laptop5 Surface Book Surface Book2 Surface Book3 surface3 Surface Pro3 Surface Pro4 Surface Pro5 Surface Pro6 Surface Pro7 Surface Pro8 Surface Pro9 Surface Pro X Surface Go Surface Go2 Surface Go3 Surface Go4 Management Number: M25