A satellite radio-controlled wristwatch, comprising: a satellite radio wave reception unit comprising an antenna for receiving a satellite radio wave, a high frequency circuit, and a decoder circuit; a clock circuit for holding and counting an internal time; an operating member for receiving an operation by a user; and a controller for controlling timings of at least: an activation operation of supplying power to the satellite radio wave reception unit for activation thereof; an acquisition and tracking operation of acquiring and tracking a certain satellite radio wave by the satellite radio wave reception unit; and a time information acquisition operation of acquiring time information from the satellite radio wave received by the satellite radio wave reception unit, the controller being configured to: detect a reception instruction by the user through the operation of the operating member; immediately start the activation operation when a delay time period from a time point at which the reception instruction is issued to an earliest time information receivable time point predicted based on the internal time is longer than a first threshold value and shorter than a second threshold value; wait for arrival of an activation time point inversely calculated from the earliest time information receivable time point to start the activation operation when the delay time period is longer than the second threshold value; and wait for arrival of an activation time point inversely calculated from a next earliest time information receivable time point to start the activation operation when the delay time period is shorter than the first threshold value. a satellite radio wave reception unit comprising an antenna for receiving a satellite radio wave, a high frequency circuit, and a decoder circuit; a clock circuit for holding and counting an internal time; an operating member for receiving an operation by a user; and a controller for controlling timings of at least: an activation operation of supplying power to the satellite radio wave reception unit for activation thereof; an acquisition and tracking operation of acquiring and tracking a certain satellite radio wave by the satellite radio wave reception unit; and a time information acquisition operation of acquiring time information from the satellite radio wave received by the satellite radio wave reception unit, an activation operation of supplying power to the satellite radio wave reception unit for activation thereof; an acquisition and tracking operation of acquiring and tracking a certain satellite radio wave by the satellite radio wave reception unit; and a time information acquisition operation of acquiring time information from the satellite radio wave received by the satellite radio wave reception unit, the controller being configured to: detect a reception instruction by the user through the operation of the operating member; immediately start the activation operation when a delay time period from a time point at which the reception instruction is issued to an earliest time information receivable time point predicted based on the internal time is longer than a first threshold value and shorter than a second threshold value; wait for arrival of an activation time point inversely calculated from the earliest time information receivable time point to start the activation operation when the delay time period is longer than the second threshold value; and wait for arrival of an activation time point inversely calculated from a next earliest time information receivable time point to start the activation operation when the delay time period is shorter than the first threshold value. detect a reception instruction by the user through the operation of the operating member; immediately start the activation operation when a delay time period from a time point at which the reception instruction is issued to an earliest time information receivable time point predicted based on the internal time is longer than a first threshold value and shorter than a second threshold value; wait for arrival of an activation time point inversely calculated from the earliest time information receivable time point to start the activation operation when the delay time period is longer than the second threshold value; and wait for arrival of an activation time point inversely calculated from a next earliest time information receivable time point to start the activation operation when the delay time period is shorter than the first threshold value.