A. Suitable for Surface series stylus pens. B. Intelligent shortcut key design. The intelligent buttons and auxiliary functions make operations more convenient. The eraser button can be used to erase traces, and the right - click button can be used to quickly select content to improve work efficiency. C. Low - power design. The battery can be replaced at any time, and it has a relatively long battery life. D. The pen body of this stylus is made of aluminum alloy, which is durable and suitable for daily use. E. This Surface stylus does not require Bluetooth connection. Simply insert the battery and it can be used. Name: Stylus pen Pressure sensitivity level: 1024 Buttons: Eraser, right - click Battery: 1 alkaline battery Dimensions: 142 x 10mm Usage method: Can be used without pairing. The battery needs to be installed correctly. Compatibility: Suitable for Surface 3/Pro3/Pro4/Pro5/Surface Book/Laptop Color: Black Material: Metal Package contents: 1 stylus pen 1 nib extractor 1 spare nib Only the above package contents are included, and no other products are included. Note: Light reflection and different displays may cause slight differences between the color of the item and the actual situation. The allowable measurement error is +/- 1 - 3cm.