Beers ERT 300 Tennis Computer, Black Review

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Beers ERT 300 Tennis Computer, Black Review

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Beers ERT 300 Tennis Computer, Black

Displays current string bed stiffness (dynamic tension), indicates the power and aggressiveness of play

Provides highly precise measurement through an electronic simulation of the ball impact

Pocket-sized, cordless, and easy-to-use

Works with any racquet and string type

Microprocessor controlled, battery operated

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