A portable Bluetooth speaker device having complex functions is provided. The speaker device including: a Bluetooth receiver receiving voice information data; a GPS receiver receiving latitude, longitude, and altitude information using a plurality of global positioning system (GPS) satellites to obtain current location information data; a carbon monoxide detector detecting carbon monoxide concentration in air; a display unit displaying the current location information data and a current carbon monoxide concentration value on a display screen; a power amplifier amplifying the voice information data to a predetermined amplification level; a voice output unit outputting the amplified voice information data; a controller configured to receive the voice information data and transmit the received voice information data to the power amplifier and to control such that the current location information data and the current carbon monoxide concentration value are displayed on the display screen; and a power supply unit supplying necessary power to the respective units.