The present invention relates to a watch type terminal, including a main body, and a sensing unit disposed on one surface of the main body and configured to acquire a biometric signal, wherein the sensing unit includes at least one green light emitting device provided on one surface of the main body and configured to output green light, at least one yellow light emitting device disposed with being spaced apart from the at least one green light emitting device, and configured to output yellow light with a different skin transmittance from that of the green light, a light receiving sensor surrounded by the green light emitting device and the yellow light emitting device, and configured to receive reflected green light and/or yellow light, and a controller configured to generate a biometric signal using light incident on the light receiving sensor.