TANITA offers body composition analyzers with both single and dual frequency technology. The main difference between these two technologies is the number of frequencies used to measure body composition.

Single-frequency analyzers typically use a frequency of 50 kHz to measure body composition, while dual-frequency analyzers use two frequencies (typically 5 kHz and 50 kHz) to measure body composition. The idea behind using two frequencies is that different tissues in the body respond differently to electrical currents of different frequencies, which can help provide a more accurate measurement of body composition.