ySelector( '.progress-ring-progress' );
        this.circumference = 2 * Math.PI * TIMER_CONFIG.progressRingRadius;
        this.progressRing.style.strokeDasharray = `0 ${this.circumference}`;
      }

      bindEvents() {
        this.playPauseBtn.addEventListener( 'click', () => this.toggleTimer() );
        this.resetBtn.addEventListener( 'click', () => this.resetTimer() );
        this.muteBtn.addEventListener( 'click', () => this.toggleMute() );

        this.display.addEventListener( 'click', () => th