Yamaha DGX620

Overview
The Yamaha DGX620 is an 88-key musical keyboard. It is similar (though obviously not identical) in appearance and functionality to the Yamaha DGX505, which is somewhat cheaper; the main difference seems to be that the 620 has a fully-weighted keyboard.

Reference

 * Manufacturer:
 * Yamaha: DGX620
 * Retailers:
 * Amazon: DGX620AD
 * Sam's Club: DGX620B ($690)