Amazon.com : Swing Caddie SC4 Portable Golf Simulator and Golf Launch Monitor for Indoor and Outdoor Use with Bluetooth Connectivity via Smartphone or Tablet - 10 Hours of Battery Life : Sports & Outdoors
Amazon.com: Garmin 010-02356-00 Approach R10, Portable Golf Launch Monitor, Take Your Game Home, Indoors or to the Driving Range, Up to 10 Hours Battery Life : Electronics