The Wacom CS321AK Bamboo Ink Stylus in black is a smart stylus designed for use with various touch Windows-based PC's, including models from Samsung, Microsoft, Acer, ASUS, and AMD. Made of metal/aluminum, this stylus is battery-powered and has a sleek design with dimensions of 5.8 inches in height and 0.4 inches in width. With its compatibility and high-quality construction, the Wacom Bamboo Ink Stylus is a reliable and stylish tool for precise and efficient input on your touchscreen devices.