A wearable device comprising: a main body and a mounting unit ; the main body including: an analog watch unit that includes a time indicating unit that indicates time; a drive unit that automatically drives the time indicating unit according to a first control signal; a first control unit electrically connected to the drive unit to transmit the first control signal to the drive unit; and a first connector provided with a recess ; and the mounting unit including: a touch screen that senses an input for adjusting the time indicating unit ; a second control unit electrically connected to the touch screen to receive input from the touch screen; and a second connector which is configured such that when the second connector is inserted into the recess of the first connector , the main body and the mounting unit are electrically coupled to each other in a wired manner so as to allow data communication between the main body and the mounting unit; wherein at least a part of the analog watch unit is configured to perform an operation according to a control/data signal of the first control unit or the second control unit . a main body and a mounting unit ; the main body including: an analog watch unit that includes a time indicating unit that indicates time; a drive unit that automatically drives the time indicating unit according to a first control signal; a first control unit electrically connected to the drive unit to transmit the first control signal to the drive unit; and a first connector provided with a recess ; and the mounting unit including: a touch screen that senses an input for adjusting the time indicating unit ; a second control unit electrically connected to the touch screen to receive input from the touch screen; and a second connector which is configured such that when the second connector is inserted into the recess of the first connector , the main body and the mounting unit are electrically coupled to each other in a wired manner so as to allow data communication between the main body and the mounting unit; wherein at least a part of the analog watch unit is configured to perform an operation according to a control/data signal of the first control unit or the second control unit . an analog watch unit that includes a time indicating unit that indicates time; a drive unit that automatically drives the time indicating unit according to a first control signal; a first control unit electrically connected to the drive unit to transmit the first control signal to the drive unit; and a first connector provided with a recess ; and the mounting unit including: a touch screen that senses an input for adjusting the time indicating unit ; a second control unit electrically connected to the touch screen to receive input from the touch screen; and a second connector which is configured such that when the second connector is inserted into the recess of the first connector , the main body and the mounting unit are electrically coupled to each other in a wired manner so as to allow data communication between the main body and the mounting unit; wherein at least a part of the analog watch unit is configured to perform an operation according to a control/data signal of the first control unit or the second control unit . a touch screen that senses an input for adjusting the time indicating unit ; a second control unit electrically connected to the touch screen to receive input from the touch screen; and a second connector which is configured such that when the second connector is inserted into the recess of the first connector , the main body and the mounting unit are electrically coupled to each other in a wired manner so as to allow data communication between the main body and the mounting unit; wherein at least a part of the analog watch unit is configured to perform an operation according to a control/data signal of the first control unit or the second control unit . <EOS>