+30 2311 205 080

You have no items in your shopping cart.

Product was successfully added to your shopping cart.

ERT 300 Tennis Computer



Worldwide ERT 300 is the only microprocessor for precise determination of string dynamic tension and playing characteristics of any tennis racquet.

Availability: Out of stock

Regular Price: €220.00

Special Price €199.90

Pay the necessary attention to how your racket is strung, because this determines 2/3 of your game. The technology of world class players from the Nr.1 innovator in racquet diagnostic systems. Weights 50gr. Deviation:± 0.2%.


1. The ERT 300 is clipped to the strings.

2. The start button is used to trigger automatic measurement. Electronic simulation of the ball impact measures and analyzes the vibrations of the strings.

3. After a few seconds, the values determined are shown on the LCD display.

4. Now use the DT system disc to determine the string dynamic tension in kp/cm.


  1. Be the first to review this product
Write Your Own Review

Earn a 3€ coupon for every approved review

Only registered users can write reviews. Please, log in or register