The Teenage Engineering OP-1 Portable Synthesizer Workstation and Sampler is a handheld synthesiser with 24 keys, ideal for creating music on the go. This digital instrument from Sweden features a display screen, flash memory, speakers, and a range of built-in effects. With USB compatibility and the ability to sample sounds, this synthesiser is versatile for both beginners and professionals in the music industry. Powered by batteries, this portable workstation also includes an arpeggiator for added creative possibilities.