I have opened and taken it out, but it has not been used. The accessories are included as they were at the time of purchase. ■ Specifications Keyboard: 37-key natural touch mini keyboard Controllers: Pitch bend wheel, modulation wheel, octave shift buttons Octave shift: -4 to +4 USB port: B terminal Wireless method: Bluetooth Low Energy (Apple Bluetooth Low Energy MIDI standard compliant) Power supply: 2 x AA batteries (when wirelessly connected), USB bus power (when connected via USB) Battery life: Approximately 30 hours (when using alkaline batteries) Current consumption: Less than 100mA External dimensions: (Width) 395 x (Height) 54 x (Depth) 139mm Weight: 1.0kg (excluding batteries) Accessories: USB cable, instruction manual, KORG Software Bundle code, 2 x AA batteries (for operation check) ■ Operating Environment ■ [When wirelessly connected]