Seiko SP12 - Thermal Printer for S143/S149 Stopwatches

The Seiko SP12 is a dedicated thermal printer designed to work with the Seiko S143 and S149 memory stopwatches. It produces fast, clean printouts of all lap and split times, giving coaches and officials immediate paper records during competitions and training sessions. When accurate, on-the-spot results matter — at track meets, swim meets, and any timed event — the SP12 turns stored times into a printed tape in seconds.

Key features & specs:

• Compatible with Seiko S143 and S149 stopwatches
• Prints 13 digits per line at 1.5 lines per second
• Large, clear, easy-to-read print
• Automatic printout of year, month, date, and time
• Uses S950 (regular) or S951 (large) thermal paper rolls
• Compact and portable for meet-day use

Coach's tip: keep a spare roll of thermal paper in your meet kit — running out mid-meet stalls scoring, and the SP12 goes through a roll fast at a big event. Print a tape after every heat so results are locked in immediately. Care: store the printer clean and dry, keep paper rolls sealed until use, and protect the print head from dust between meets.