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 direction, assisting in correcting swing plane and improving batting technique. 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 is low. 4. Lightweight and Portable: Compact design makes it easy to carry and attach to any golf club. Adds minimal weight, ensuring the club feels natural during use. 5. Suitable for Practice: Compatible with all standard golf clubs. Ideal for both left-handed and right-handed players to practice daily swings, enhance swing consistency, and improve technical precision. Material: Plastic + Metal Color: Black Package Contents: 1 x Golf Swing Alignment Sight Note: Light and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.