Electronic watch

An electronic watch, comprising:

• a base comprising a metallic main plate portion and a circuit support seat portion made of insulating material on which is mounted;
• a dynamo comprising a dynamo wheel train for transmitting external force to a dynamo rotor;
• a secondary power supply coupled to the dynamo for storing electric energy generated by said dynamo;
• a circuit section including a driving circuit coupled to the secondary power supply and constructed to be supplied with power from said secondary power supply;
• a stepping motor constructed and arranged to be driven by said driving circuit;
• a watch wheel train constructed and arranged to transmit torque from said stepping motor to a time indicating member;
• an oscillating weight constructed and arranged to transmit external force to said dynamo rotor through said dynamo wheel train, said oscillating weight comprising:
• a rotating central portion supported by said base;
• a thinner wall portion formed around said rotating central portion;
• and
• a thicker wall portion formed around said thinner wall portion;
• said watch wheel train and said dynamo wheel train being arranged on said base in a rotating area of said thinner wall portion;
• and
• said circuit section positioned such that a portion thereof is positioned at a rotating area of said thicker wall portion and is arranged in a circuit part installation hole formed in said circuit support seat, wherein said circuit section is electrically isolated from said metallic main plate.