尼康坚持使用传统的2.7英寸液晶屏，有单独的按钮控制各种功能，如菜单、定时器、删除和回放。
The Nikon sticks to one traditional 2.7-inch LCD screen with separate buttons that control functions like menu, timer, deleting and playback.
典型的电梯门上有一个定时器，其作用是当没人进入电梯且按下去其它楼层的按钮时可自动关闭电梯门。
The door on a typical elevator has a timer on it which closes the door automatically if no one enters the elevator and pushes a button for another floor.
工程师们还需检测：定时器的计时按钮在承受了15，000次按压后，是否仍能保持正常运作。
They also check that the chronograph pushpieces, tested to withstand more than 15,000 pressing motions, are working correctly.
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