1. Easy to Install: Slide the sleeve from the clubhead toward the grip, then insert the sight from the bottom upward. Adjust the sight left or right until the beam is at a 90-degree angle to the clubhead. 2. Improve Swing Accuracy: The alignment sight helps players develop proper swing path and correct hook tendencies, supporting better swing mechanics and consistent ball striking. 3. Power Supply: Powered by 3 LR44 button batteries. In "INT" mode, the beam activates for 10 seconds. In "CON" mode, the beam remains on continuously until battery power diminishes. 4. Lightweight and Portable: Compact design with a lightweight construction that easily attaches to any golf club without adding noticeable weight. 5. Practice Aid: Compatible with all standard golf clubs. Suitable for both left-handed and right-handed players to enhance swing practice, improve alignment, and develop consistent technique. Material: Plastic + Metal Color: Black Package Contents: 1 x Golf Swing Sight Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement error allowed within +/- 1-3 cm.