Coolang Tennis Tracker
Tech specs 
DimensionsDiameter 30mm
Thickness 10mm
Weight6 grams
Battery life5 hours
Water resistanceSplashproof
Internal memoryYes
SensorsGyroscope and Accelerometer
Smart watch compatibleNo
Compatible brandsAll
Impact locationNo
Number of shotsYes
Shot typeYes
Spin typeYes
Swing speedYes
Ball speedYes
Live trackingYes
Video functionYes
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