The teenage engineering op 1 field system is comprised of the most popular teenage engineering products on the market including the ob 4 bluetooth speaker op 1 field synthesizer tx 6 mixer cm 15 condenser microphone and the tp 7 field recorder giving you a huge musical ecosystem to create produce and inspire your musical ideas. The op 1 field takes the original op 1 design to the next level building on over a decade of research and development to create the ultimate portable synthesizer. Refined upgraded and enhanced nearly every facet of the original design has been overhauled including bluetooth midi connectivity a huge 24 hour battery life new synth engines and a whole host more! The ob 4 bluetooth speaker boasts an endless looping tape that captures everything you play allowing for instant rewinds and remixes of live radio or your favourite tunes. With a 40 hour battery life on bluetooth and a unique motorised interface the ob 4 offers an unparalleled user experience. The tp 7 field recorder is a compact audio recorder with 128gb onboard storage which utilises a motorised tape reel design that utilises smooth ball bearings to control menu navigation playback scrubbing and more. The cm15 condenser mic is a compact condenser microphone perfect for both studio and desktop recording. Its small size allows it to be used anywhere and its built in battery has a charge life of up to 10 hours. The tx 6 ultra portable mixer features six channels of connectivity and also functions as a portable audio interface perfect for music composition and live performances.