Very reliable - Competition Electronics ProChrono DLX with Bluetooth

This unit rarely misses a reading. Produces accurate results according to predicted velocities in manuals. Bluetooth feature and velocity readout on my phone Amd the ability to store the strings in an app on my phone is a real time saver. No more squinting to see the read out. Phone speaks the reading out loud and logs it in the app. Really a great upgrade from the standard version, which also worked very reliably. Great device. Highly recommended.