Jawku Speed Watch: Wearable Sensor With Jawku Speed We Eliminated The Need For Expensive Timing Gate Systems, And The Stopwatch. Now You Can Test Speed, Agility And Reaction Time With Just The Jawku Speed Wearable Sensor And Your Phone. Nothing Is Easier Or More Accurate. Set Up And Time The Most Common Sprint And Agility Events Or Create Your Own Tests With The Build-A-Drill Functionality. With Jawku Speed, You Can Measure Both Speed And Reaction Time. It The Perfect Solution For Training And Testing So You Can Maximize Your Performance When It Counts. Visualize Your Performance Over Time And Get The Accuracy Of Multi-Thousand Dollar Timing Systems Condensed Into Technology That You Wear On Your Wrist And Load On Your Phone. Track And Visualize Your Performance Over Time And Track Your Personal Records In The App History Mode. See How Your Reaction Time Out Of The Blocks Affects Your Overall Time, And Where Your Splits Are. Track Speed, Sprint Timing, Reaction Time, Agility Track 40Yrd Dash Timing 5-10-5 Timer | Jawku Speed Watch - 1