In the early 1920s, manufacturers from Switzerland incorporated scales, to improve the speed, accuracy and reliability of the device measuring a patients pulse.[6] Today, there is greater interest in smartwatch wearable devices due to their ability to perform many other biometric and technological functions aside from measuring pulse.[2] Despite this, brands like Longines, Blancpain, Montblanc, and Vacheron Constantin still produce traditional pulse watches.[6]