When it works, it works very well. I videotaped my swing with the product, drew the swing plane lines over the video and found that the resulting swings were very close to plane. I've also found that lots of product swings lead to "muscle memory". I don't know how long it lasts without an update. But there is a problem. As mentioned in many other reviews, the laser does not stay on. It expires after each hit. Mine came with a small plastic clip that seems to prevent accidental shutdowns. It can be used to hold down the switch button, which prevents the laser from turning off. I don't know how long it will be before the clip breaks or I lose it. The concept is very good. I wish the performance was a little better.
Yokohama Ice Guard IG55 205/60 R16 96T winter
131 Review
Shaver Braun Series 3 300s, black
84 Review
Cordiant Winter Drive 195/55 R15 85T
73 Review
WhiteFang Golf Net Bundle Golf Practice Net 10X7 Feet With Golf Chipping Nets Golf Hitting Mat & Golf Balls Packed In Carry Bag For Backyard Driving Indoor Outdoor
38 Review
Hornady Black Diamond By Umarex - Improved Product Name For Enhanced Search Engine Optimization
28 Review
ALONEFIRE Offset Flashlight Mount For Picatinny Gun Tactical LED Torch - Sports Outdoors Hunting Fishing Shooting Airsoft Guns Accessories Sights Optics Scope
24 Review
OneTigris Tactical Half Face Mask: Foldable Mesh Protection For Women & Teens - 4.5 Inches
23 Review
TAC9ER Kevlar Lined Tactical Gloves: Full Hand Protection, Cut & Temperature Resistant, Touchscreen Friendly For Men & Women
45 Review