DURABLE QUALITY AND PREMIUM MATERIAL: Six standard golf balls light up for at least 8 minutes. Diameter: 42.67mm, Weight: 45g. Three-layer construction made of soft and elastic materials securely protects the built-in LED light, enhancing durability and extending LED lifespan. Total LED life is up to 50 hours. Lights flash brightly upon impact, creating a visible arc in the sky when hit. DISTINGUISH BALL EASILY: Different colored logos help identify each ball quickly without needing to hit them. HOW TO USE: When struck firmly, the two internal LED lights activate simultaneously. Each illumination lasts approximately 8 minutes, providing ample time to locate and retrieve the ball. After 8 minutes, the light turns off; striking the ball again reactivates the light. These international products are sourced from outside the local market and may differ in packaging, labeling, language, or other specifications compared to domestic versions.