FEATURES:

• Ideal for using as a warm-up swing aid or stroke and timing improvement tool
• Uses kinesthetic and auditory biofeedback to guide players to improve up to 4 times faster than without any guidance aid
• The racquet head either goes up or down at a very specific moment for correct and efficient technique
• Every time the racquet head swings up or down, there’s a loud snap
• Helps all strokes
• Manufacturer’s Warranty: 1 Year