Our Technology
LITT uses advanced sensor technology to detect the impact of vibration when the tennis ball makes contact with the racket.
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LITT is engineered to monitor vibration, which correlates with string health, and changes color from green to orange and then to red indicating that your strings are healthy, wearing out, and finally, need to be changed.
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LITT products do not need to be charged or turned on and off. Simply apply one to your racket, or have a stringer apply it for you and then click the LITT triangle logo to display the status of your string health.
LITT Light Spectrum
GREEN
String Health
Excellent, "Fresh String"
Playability of String
Maximum
String Tension Loss
Minimal
Snapback of String (Poly)
Maximum
String Elasticity & Resilience
High
String Vibration
Low
ORANGE
String Health
Satisfactory
Playability of String
Lower than optimal performance
String Tension Loss
Some loss of tension
Snapback of String (Poly)
Strings begin to notch at intersections, some snapback, less spin generation, and power
String Elasticity & Resilience
String beginning to stiffen, dwell time on strings has increased (some trampoline effect)
String Vibration
Has increased, if you've had tennis elbow in the past begin to monitor
GREEN / YELLOW
String Health
Very Good
Playability of String
Very High
String Tension Loss
Holding - minimal tension loss
Snapback of String (Poly)
Very Good
String Elasticity & Resilience
High
String Vibration
Slight increase, but still low
ORANGE / RED
String Health
Starting to deteriorate
Playability of String
Poor quality of play
String Tension Loss
Considerable loss
Snapback of String (Poly)
Minimal snapback, spin generation low
String Elasticity & Resilience
String has stiffened, increased dwell time, player will need to increase swing speed in order to generate the same spin and power of a newly strung racket
String Vibration
High, for players with wrist, shoulder, or elbow issues may consider replacing string
FLASHING RED
String Health
Very poor, "Dead"
Playability of String
Very poor, quality of play affected
String Tension Loss
High loss of string tension, loss of ball control
Snapback of String (Poly)
Strings have notched - little to no snapback and string control is low
String Elasticity & Resilience
String is now stiff and "dead," dwell time is maximum, player must increase swing speed to generate similar power and spin of new strings
String Vibration
Maximum, unhealthy for players with wrist, shoulder or elbow issues. Increased string vibration is known for contributing to tennis elbow
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YELLOW / ORANGE
String Health
Good
Playability of String
Satisfactory
String Tension Loss
Starting to lose tension
Snapback of String (Poly)
Loss of some snapback
String Elasticity & Resilience
String life starting to erode
String Vibration
Increasing
Players can continue to use string even when the LITT device shows red. String will not necessarily break when the LITT device turns red. Red light indicates that string quality is compromised and will begin to affect performance and quality of play. Player to change their strings at their own discretion.