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Punch Counting
Don't just randomly punch the bag until you are tired.  Create a program.  Start with sets of 200 punches, each hand.  Switch to two per hand, and then four. 
Track your progress using SDXt iMetrics (requires Speed Demon XT).  Pull up your workout history in the iMetrics logbook, or review your workouts using the analytics provided by iMetrics. 
Speed Measurement
You know you can hit the bag fast.  You just don't know how fast.  Find out.  Only the Speed Demon can quantify your gains.
Time Trials (SDXt iMetrics)
Tired of the same old routine?  Set a time trial to see how many punches you can throw in one minute (or more!).  Switch it around and try to complete a "punch down" - how fast can you throw 250 punches?  500?
Speed Endurance Ratings (SDXt iMetrics)
Every time you workout, SDXt iMetrics will rate your workout using a speed endurance algorithm that analyzes the number of rebounds and your average speed for the duration of the workout.  Your current speed endurance rating is your cumulative rating for the last 30 days, and your lifetime speed endurance rating is your rating since starting using SDXt iMetrics.
Challenge Mode
You have to keep punching faster and faster to get ahead in this mode. The Speed Demon's Challenge Mode may just make you insane. It's also an easy way to compare your skill (insanity?) with others.
Multi-User Support (SDXt iMetrics)
SDXt iMetrics tracks data separately for each user.  If you are a personal trainer, this feature will allow you to keep track of multiple clients all from one device.  When one user is finished, you simply select a different user, and they are ready to go!
The Speed Demon Xt includes the Speed Demon Power T swivel (it is also compatible with the Deville 13 Swivel) and comes with SDXt iMetrics (available for free through the app store).  It can also be used as a stand-alone device, for punch counting, speed measurement, and basic challenge mode.  SDXt iMetrics app requires an iPhone (4S or higher), iPad (3rd Generation or higher), or iPad Mini. 
Check out our videos  to see the Speed Demon Xt in action.

The Speed Demon - "Every Punch Counts" Visit our Online Store to buy one today.
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Click here to watch the video.
The Speed Demon Xt tracks your speed bag's every move.  Watch your punch count or speed on its built in display, or let the Demon's challenge mode make your arms hurt.
Have an iPhone (4s or higher) or iPad (3 or higher)? Use the free Speed Demon app (SDXT iMetrics) for time trial challenges, an expert challenge mode, and to log and analyze all of your workouts!
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Speed Demon One Minute Challenge - 2014
Click here to watch the video.
New Speed Records set at Speed Bag V event! Click here to view.