The ThinkPad X1 Presenter Mouse features a twist hinge design and a flat mode for storage or presentation purposes. 104 x 63 x 62 mm / 4.09" x 2.48" x 2.44", Black, optical sensor, 3-level on-the-fly adjustable DPI (1600, 1200, and 800), Windows, Bluetooth 5.0, 2.4 GHz wireless via nano USB receiver, four buttons, 45° vertical angle, rechargeable, and one year