Description of SP Pro Timer 2 The best wireless timer on the market that could help improve your shooting and training. The SP Pro Timer 2 is now operate on Android mobile system, no more wiring for stage setup. Easy to use, rummy momenta simple system that could help you train your shooting skills.Please check User Manual for setup instruction.User Manual https://www.youtube.com/watch?v=Hn6cdgty3pc

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