Abstract
New type of self-generation watch(Eco-Drive Thermo)has been developed. Micro-thermoelectric generator set in this watch converts body heat to electric energy and drive this watch. Generator is consisted of 2,268 pairs of BiTe thermocouples in a square cm and has very high output-voltage of 0.8V/℃. From wearing experiments of this watch, average generation energy of 12μ W was estimated.