Brand: Holux
Model: M-1000C
Works? Yes
Startup Time: Almost immediately when near the location where it was turned off. About 30 sec when moved 200 miles.
Sensitivity: Very sensitive. It gets a lock inside my house with steel siding and closed metal blinds.
Rating: 9/10
Battery Life: Rechargeable. I haven't run it out yet.

It would only be better if it was driverless and mounted like a flash drive to retrieve data.