This RockJam keyboard piano features 54 full size keys that gives this keyboard a traditional piano feel Compact and portable the RockJam 54 keyboard piano can be powered by either batteries and mains power (power supply included.) making it perfect for use both in the home and on the road Two Inbuilt stereo speakers provide excellent sound quality allowing you to monitor your practice and performances The sheet music stand is perfect for supporting either sheet music or tablet devices so you can read music or follow tuition as you play Exclusive access to content within the Simply piano application for both iOS and Android devices to assist keyboard piano players both young and old