This listing features 2 vintage Texas Instruments TI DataMan calculators. These retro electronic toys are in good working condition and would make a great addition to any vintage electronics collection. The calculators were made in Japan and have not been modified. The brand is Texas Instruments and the model is TI DataMan. This is a vintage item, so it may show some signs of wear, but overall it is in good condition. This item is sold as-is, with no warranty or guarantee.