Korg RK-100S Black, Keytar-Synth, 37 Slimkey velocity sensitive, MMT Sound Engine (Multiple Modeling Technology), max. 8 Voices Polyphony, 16-Band Vocoder, Arpeggiator, Effects, 200 Preset Sounds, LED-Display, Connections: combined Mic-/Line Input 1/8" TR Mono (for Mono-Microfophone with Plug-In Power), Line-Out 1/4" TRS (Line/Headphones), MIDI Out, USB, Power via 6x AA Battery or optional Power Supply DC9V, Dimensions: 830 x 262 x 71 mm (WxDxH), Weight: 3.4 kg, incl. Strap, Soft Case and 6 AA Batterys, colour: black