This is an ultra-thin external keyboard with a thinnest part of 7mm. Even at its thickest point, it's only 22mm, making it convenient for carrying and storage. The keyboard material is mixed with an antibacterial agent to suppress the growth of E. coli and Staphylococcus aureus. It is compatible with both Windows and Mac. ⬛︎Specifications Interface: USB Connector Type: USB A connector Number of Keys: 82 keys Key Pitch: 19mm Key Stroke: 2.0±0.3mm Operating Force: 60g Key Arrangement: Japanese OADG 109A layout compliant Key Switch: Pantagraph Size: W285 x D125 x H22mm Weight: Approximately 195g Cable Length: 1.5m