lượt xem
2:38
Photo Finish: Fully Automatic Timing App
8:57
How To Time Sprints By Yourself ACCURATELY! | Sprint Timer - Photo Finish App Review
4:03
How To Time Your 100m Sprint Alone With Sprint Stopper App
8:52
DIY Sprint Race Timing System with Arduino
2:55
Photo Finish Tutorial - Sprint with Starting Clapper
30:13
Interval Timer 30 Seconds
11:53
Freelap Timing System - Full Review
0:52
Photo Finish Tutorial - Alignment Instructions
