I purchased this new about 3-4 years ago, but I haven't had a chance to use it, so I'm offering it for sale. (The following is quoted from the official website) A dedicated pen for natural handwriting input This is a digitizer stylus (pen) specifically for the VAIO A12 and VAIO Pro PA*1. It uses a Wacom device, known for its reliability and performance, and provides a natural drawing experience with high resolution (4096 levels) and no lag. Name/Model: Digitizer Stylus (Pen) / VJ8STD3 Compatible Models: VAIO A12, VAIO Pro PA Buttons: 2 buttons Reading Method: Active Electrostatic (AES)*2 Power Supply Voltage: DC 1.5 V Power Source: One AAA alkaline battery *3 Battery Life: Approximately 18 months (when using alkaline batteries) *4 Dimensions/Weight: Approximately 127 × 9.5 mm (length × diameter) (excluding protrusions), approximately 18g (including battery) Included Accessories: AAA alkaline battery, pen tip (pre-installed), instruction manual, warranty Operating Environment: Operating temperature: 5°C to 40°C