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 + Rubber Battery: 1* button cell (can not be replaced) Glowing time: approx 5-8 minutes for once , max.50hrs in total Elasticity: above 65% Hardness: above 80% Diameter: 42.67 mm / 1.7 in Unit weight: approx. 45.9 g / 1.6 oz Package List: 6* Ball Package List: 6* Ball