One of the more interesting high-complication watches for Jaeger-LeCoultre this year was the Reverso Répétition Minutes à Rideau. The oddly named watch (if I see more than one accent mark my eyes start to glaze over) actually just translates into minute repeater via curtain. Being a Reverso the watch has two dials, one of which is covered with a sliding metal curtain. Using your finger, you push the curtain aside to reveal one of the two watch dials. The curtain also activates the minute repeater complication.