Yamaha DGX-660 88 Key Digital Piano Bundle with Yamaha UDWL01 WiFi Adapter and Knox Piano Bench The 88 Key Yamaha DGX-660 Portable Electric Piano features Built-In Amplifier and Speakers and Pure CF Sound Engine The Graded Hammer Standard (GHS) keyboard features a weighted action with heavier touch in the low end and lighter touch in the high end, just like the hammers inside an acoustic piano The Piano Room provides a dedicated virtual space where you can choose from a variety of pianos and acoustic settings, creating your personalized practice or performance environment The UD-WL01 USB WiFi Adapter is a simple and convenient device that creates a wireless connection between the DGX-660 and the players iOS device for increased versatility and creativity Kit Includes: Yamaha DGX-660 Portable Grand Electric Piano w/ Knox Full-Size Piano Bench & Yamaha UD-WL01 USB WiFi Adapter