Capsule endoscope and capsule endoscope system

A capsule endoscope system comprising:

• a magnetic field generator configured to generate a magnetic field acting on a capsule endoscope to be introduced into a subject;
• an operation input device configured to input instruction information for changing the magnetic field to guide the capsule endoscope;
• and
• a transmitter configured to wirelessly transmit the instruction information to the capsule endoscope, wherein
• the capsule endoscope including:
• a function-performing device configured to perform a function;
• a permanent magnet;
• a power source configured to supply power;
• a first inductor including a cored coil, the first inductor being configured to boost a voltage of the power and output a first voltage;
• a second inductor including an air-cored coil, the second inductor being configured to boost a voltage of the power and output a second voltage;
• a receiver configured to receive the instruction information transmitted from the transmitter;
• and
• a controller configured to perform control to supply first power according to the first voltage to the function-performing device, when the receiver does not receive the instruction information, and to supply second power according to the second voltage to the function-performing device, when the receiver receives the instruction information.