Swingbyte Golf Training Device Lightweight golf swing sensor with smartphone/tablet compatible application for game improvement Sensor sends swing data to your smartphone or tablet instantly via Bluetooth Attaches easily to any club in your bag--driver through putter Advance online analytics provide full swing history, trends, and development areas and allow you to share data Comes with application for Android or Apple smartphone or tablet, two attachment straps, and two adhesive mounting tabs; one year limited warranty