A wearable terminal can include a main body configured to be in contact with a body of a user using one side of the main body, a photo plethysmography including a transmitter combined with one side of the main body and outputs a output signal, and a receiver detecting a reflection signal corresponding to the output signal returned, a cover configured to cover the photo plethysmography and be combined with the main body and a controller configured to measure a heart rate based on a reflection signal measured by the photo plethysmography. The cover is combined with the main body and parts corresponding to the transmitter and the receiver of the photo plethysmography include transparent units through which the output signal and the reflection signal are passing and a barrier unit positioned between the transparent units and shielding the output signal and the reflection signal.