Does any one have any idea how long the internal batteries last in the new compact Gramin/ Labradar chronagraphs

I probably had about a dozen or so range sessions on the garmin before I charged it. Was around 40% if I recall at that point.

Some products, when the internal battery gives up the ghost, can be operated with a power bank plugged in.

I have an older Labradar. Initially I used the internal replaceable batteries but they did not last very long so I got a 10,000 mah USB battery pack and have been using it now for several years. I have never had it die on me at the range but I do have to remember to recharge it every so often.
It will be interesting to see what the run time is on the new Garmin unit.
C.G.B.