The IVC 800 series 1 Inch VTR was very popular. 800 series were reel to reel helical 'mid band' professional color VTRs using 1 inch/25mm tape running at 17.2 cm per second/6.77 inches/second. Variants included slow motion and editing models, and all were available in NTSC, PAL, and SECAM. Many special versions were designed and supplied for high bandwidth instrumentation recording. The European versions of the IVC800 in PAL and SECAM were particularly popular in Great Britain, France and Germany where IVC operated subsidiary companies. The VTRs were also branded for Bell & Howell who were a big player in the instrumentation recording market at the time. Bell & Howell also provided some financial support to IVC in the founding days, as well as a number of key engineering and commercial staff.