After 15 years with the GLM80 Professional, which has given up the ghost, I decided to stay with the company as a satisfied customer.
I wouldn't characterize this particular product as a successful purchase.
First of all, it is large and uncomfortable to use. Okay, it has a camera and Bluetooth, but the app is useless. It requires a subscription of €150 per year to be able to export DXF or to design with diagonals!

The GLM 150-27 C, which looks exactly the same, at least has a rechargeable battery, and very importantly, with the USB, you can transfer the photos with the measurements to the PC. I did not find such a function in this one.

Prefer the 150-27C or something from Leica

I have had it for about a week, but I perform measurements almost daily, both indoors and outdoors.
So far, the tool has performed flawlessly, it is quite fast in the measurements that at first I thought it was problematic.
I have not encountered any issues, maybe a slight deviation of 2-3 cm when I perform indirect measurements.
The application is useful but requires some getting used to.
The battery usage is satisfactory (depending on camera usage as well).
For so many years, I worked with tools from the Middle Ages, at least I won't curse anymore when measuring in sunlight.
Recommended.