The golf laser putter is perfect for anyone wishing to improve their golf putting and get more accuracy and proficiency on the putting green. This product - Projects a laser point for aim reference to hole and comes with a push button ON/OFF switch so it can be easily powered off when no in use. It will easily attach to most putter shafts and is lightweight. Product is powered by x2 LR44 batteries which are supplied. Actual unit is only 6.5 x 3.2 x 2.5 cm in size and weighs only 21g Packed in a Colour box it makes an ideal gift for any golfer. - - Push button ON/OFF switch- Easily attaches to most putter shafts- Lightweight- Requires 2 x LR44 batteries (supplied)- Actual unit is only 6.5 x 3.2 x 2.5 cm in size and weighs only 21g