Use this Stopwatch for free to time tasks like rubics cube solving or 40 yrd dash. Log cross country running times. I added a delayed start feature. I can sell you usb device(around $30) to start and stop the clock with a push button switch. I can sell you a wireless device(200ft) with an infrared sensor($130) to start and stop the clock. There is also an android cell phone version. Email me for more info at timhahn@sbcglobal.net