Feature:1. Made of high quality synthetic and rubber,durable to use.2. Built-in LED light will brightly flash on Impact.When the ball is hit hard on the floor, the LED lights will glow at the same time.3. The lighting time is around 5-8 minutes per time,enough time to pick them up. After 5-8 minutes,the light will be extinguished, hit again, and light up again.4. When the battery(can not be replaced) runs out,the ball only use as a regular golf ball,it will not glowing anymore.5. Good for day and night golfing.Specification:Ideal for golf playing enthusiast.Features:Made of high quality synthetic and rubber,durable to use.Built-in LED light will brightly flash on Impact.When the ball is hit hard on the floor, the LED lights will glow at the same time.The lighting time is around 5-8 minutes per time,enough time to pick them up. After 5-8 minutes,the light will be extinguished, hit again, and light up again.When the battery(can not be replaced) runs out,the ball only use as a regular golf ball,it will not glowing anymore.Good for day and night golfing.Specification:Color: White / Pink / Blue / Yellow / White / Green / Multi-color (optional)Material: Synthetic + RubberBattery: 1* button cell (can not be replaced)Glowing time: approx 5-8 minutes for once , max.50hrs in totalElasticity: above 65%Hardness: above 80%Diameter: 42.67 mm / 1.7 inUnit weight: approx. 45.9 g / 1.6 ozPackage List:6* BallPackage List:6* Ball