I bought a Klein tester a few years ago based on recommendations from folks here on the forum. I can't believe I waited so long in life to get one. They are great. Mine is made by Klein like your new one, and it has functioned flawlessly. Klein makes a bunch of different ones. I keep the battery out of the device and attached to the outside with a rubber band. Since I don't use this frequently and don't want a partially used battery inside to leak and corrode the thing. Here's the one I ended up with:Mad at me again today. Sunday I bought a cheap non-contact voltage tester, marked down from $5. Worked fine when I got home, worked yesterday. Today, not so much… it lost it’s cheap little mind. Started beeping while in my pocket. Wouldn’t read any ac voltage. Should have known it was junk at $4. This evening I bought a quality tester made by Klein tools for $21.
https://www.amazon.com/Klein-Tools-NCVT1XT-Non-Contact-Waterproof/dp/B08DQMX7YF