Rafael Nadal Forehand: Unit Turn Analysis | Video analysis and sports coaching mobile app for iPhone and iPad, with slow motion and side-by-side comparison - Ubersense and Ubersense Golf
Tennis Swing Analyser - on the court - YouTube
Zepp Tennis 2 Swing & Match Analyzer Training Aid 852067005944 | eBay
Best Buy: Zepp Tennis Swing Analyzer Green ZA1T2NA
Zepp Launches World's First 3D Tennis Swing Analysis For Mobile Devices | Business Wire
Silver: "Point Your Butt Cap at the Net" - Fault Tolerant Tennis
Zepp's tennis sensor now includes a highlight camera | Engadget