Rich Interface & Various Button: MIDI function allows you to connect computer, smart phone and other intelligent devices to obtain better piano training experience. 128 Rhythms, 128 tones and 20 demos makes playing more fascinating. Moreover, chord, transpose, metronome, drum kit and recording buttons satisfy different playing requirements. | Full Size Knocking Force Keys for Soft Finger Touch: Full size knocking force keys crafted according to 1:1 piano key ratio, provide comfortable finger touch and make for similar depth in keys. The volume will change depending on how hard you play.Made from durable ABS material, smooth keys will prevent skidding during playing time and avoid fading to keep long-lasting high gloss. | Upgraded Sound & Touch Sensitive: Compared with previous electric piano keyboard, the upgraded one increases knocking force key function switch, which can easily come true through long pressing the transpose+ button. Thus, different dynamics will present unique piano piece. And designed with external sound, the digital keyboard will make tremendous sound. | Safe Material & Longer Playing Time: Premium aluminum alloy ensures reliable structure for prolonged service time. Silicone panel reduces risk of appearing potential damage. ASTM certification certifies adequate security of frequent usage. After charging 4 hours through power bank, computer USB or power strip, the keyboard can keep 12 hours battery life. | Portable Carrying Case Facilitates Storing: Big carrying case is convenient to store keyboard so that you can take keyboard anywhere and play anytime at will. Waterproof as well as heavy-duty oxford cloth will protect digital piano safely. Meanwhile, portable hand belt and strap facilitate carrying effectively.