Zepp Tennis 2.0 Swing & Match Analyzer, Tennis Swing Training Aids, Tennis Training Equipment for Men & Women, Most Powerful Tennis Swing Analyzer, Track Parctice and Match Sttistics.

Works really well and quite happy with the data I’ve got from it.Got to connect on iPhone and Apple Watch effortlessly. Bluetooth connection. You can only have it linked to watch or iPhone but not both. You have disconnect the other for the other to connect.It’s quite intrusive so don’t notice it on the bottom of your racquet.Seems decent quality product.Can see your last shot stats on your watch when you connect the sensor to your watch before starting play.Then disconnect the sensor from watch and open the iPhone app and the sensor data is downloaded so you can see the stats.Unfortunately it looks like ZEPP have not made any updates to any of their apps for 3 years which is worrying. Can’t change the Apple Watch settings into mph because that part of the app doesn’t work. There’s no watch complication. Also the app needs updating for an iPhone with face ID because the layout is for old iOS.Edit: is no longer accurately logging everything. Everything is a backhand and can’t recognise serves anymore. Don’t know what happened because it was working before.