Sper Scientific 810017 Long Range Digital Countdown Project Timer Sper Scientific 810017 Long Range Digital Countdown Project Timer. Set a target day for completion of a project up to 8 years in the future. The timer counts down to your deadline in days, hours, minutes, seconds and 1/100 seconds. Count Up Channel: 1 Count Down Channel: 2 Range: 8 Years Resolution: 1/100 Second