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.