Took the brandy new Garmin to the outdoor range for first try. Charged the battery first, easily fit into range bag (larger hard tool box). Fast to set up, got position right on first try (really easy) and used it to chrono some new 45 ar loads. It never missed a shot, briefly taking time to calculate the result. Have no fancy phone, but unit does not need one to operate and i just wrote down the velocity's in book (no batteries/internet required), and reset session after each string. Am not needing B.C. calculation for my purposes, someone else's purpose may differ.
For my purposes, the ease of storage/transport/set up/use really helps. The reliability of getting a velocity reading is huge. In the future, am wondering how long the battery is good for. Sure it's expensive, but my actual shooting time is slowly running out and not patient enough to wait for cheaper prices or competition from other new copied models.
Will try it on indoor range at first chance, and the much smaller dedicated indoor range bag still has plenty of room for it.
Wish as i might, will not be able to get back all the time/effort messing with the old chrony. But will likely chrono much more as it is no longer a pita.