ELECTRIC TOOL AND ELECTRIC TOOL SYSTEM

An object of the present disclosure is to provide an electric tool and electric tool system with improved user-friendliness. An electric tool (2) includes a fastening unit (23), a control unit (21), a sensor unit (24), a communications unit (25), a storage unit (27), and a portable tool body. The sensor unit (24) measures at least fastening torque applied by the fastening unit (23). The communications unit (25) transmits operations data about a result of measurement made by the sensor unit (24). The communications unit (25) includes a wireless communications unit (251) and a wired communications unit (252). In a wireless communication mode, the wireless communications unit (251) transmits, by a wireless communication method, at least a part of the operations data, when a fastening operation has been done for either one round or multiple rounds. In a wired communication mode, while the communications unit (25) is operating in the wired communication mode, the wired communications unit (252) transmits, by a wired communication method, the operations data stored in the storage unit (27).