Courtmatics Smart Dampener
Tech specs 
DimensionsSmart Dampener for tennis rackets that tracks performance & takes your game to the next level.
Weight6 grams
Battery life5 hours
Water resistance
Internal memoryNo
Displayvia smartphone.
SensorsAccelerometer and gyroscope.
Smart watch compatible
RemovableYes
Compatible brandsAll. Doubles as a dampener.
Metrics 
Power
SpinYes
Impact locationYes
Number of shotsYes
Shot typeForehand, backhand, serve, overhead
Spin typeTop spin, slice, flat
Swing speed
Ball speedYes (Serve)
Live trackingYes
Video function
OtherFootwork, coaching, string tension, calories
Links 
View onCourtmatics
Amazon US rating
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