Welcome to our store！</br> 1、Installation Procedure: Push the sleeve from the rod head to the clamping direction, push the laser from the bottom to the mount. After the installation, adjust the laser direction. 2、Long Endurance: 3 button batteries power can be super long endurance, at the same time need to extract transparent insulation laser will be energized use. 3、Improvement in Daily Swing Practice: For daily swing practice, technical accuracy and practice swing improvement. 4、Usage of Exercise Push Rod: The sight head can be rotated to adjust the laser sight so that the laser line is 90° perpendicular to the head of the rod, and then use the practice push rod. 5、Laser Sight Use Modes: Two laser sight use modes, including automatic ND+ and continuous electricity CON, can be selected according to your needs. <p class="wang-edit-text"><p class="wang-edit-text"> Item Type: Golf Putter Laser Sight Pointer Weight: Approx.77g / 2.7oz Material: ABS Plastic Battery: 3 Button Batteries (Shipped With Built In Battery) Battery Model: LR44 Battery Capacity: 210mAh Features: High Quality Material, Power Durable And Easy To Use <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Golf Putter Sight Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin