A wearable electronic device having a device body, a sensor, a haptic actuator, and a control unit is presented. The device body is wearable at different tightness levels. The sensor is configured, when the device body is being worn, to measure a parameter indicative of a tightness level by which the device body is being worn. The control unit is configured, when the device body is being worn, to receive from the sensor a measurement of the parameter indicative of the tightness level by which the device body is being worn. The control unit is further configured to determine the tightness level based on the measurement. When there is a haptic effect to be output, the control unit is configured to determine, based on the tightness level by which the device body is being worn, an intensity, duration, or frequency of a haptic driving signal for generating the haptic effect.
