Product Highlights ESI Xkey 25 Air Wireless MIDI Keyboard Brand Artesia Number of Keys 25 Connectivity Technology USB Special Feature Portable Model Name Xkey 25 Air Full Size Piano Keys, Ultra Mobile Award Winning Keyboard Only 0.6 inches thick and weighs less than 2 lbs. – Goes wherever you go Professional playability with velocity sensitivity, Polyphonic after touch & more Rugged anodized aluminum frame built for years of use – NOT plastic Simply plug & play with all formats: IOS, Android, PC, MAC and Linux