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My previous smart lock was a hassle—the Bluetooth and location-based auto-unlock failed three or four times out of ten. I’d be left standing at the door for about 10 seconds waiting for it to open; if I had an urgent need to use the restroom, I felt like smashing the door down. When I saw this model—featuring palm vein recognition and solar charging (so no battery swaps)—I decided to switch immediately.Let’s start with the pros: installation was easy, the build quality is solid, and the design looks great. The screen lights up automatically when you approach, and it unlocks in a fraction of a second—so much more convenient than the old one. Palm recognition is more reliable than fingerprint scanning; wet hands, dirty hands, or darkness (check out my video) don't cause issues. The success rate is over 90%, though occasionally you have to shift your palm slightly back and forth.However, there are a few annoying quirks:Timing matters—you can't scan the moment the screen lights up; you have to wait for the red light next to it to turn on. If you reach out too early, it won't work, and you have to try again."Quick in-and-out" trips are awkward—say you leave the house but turn right back because you forgot your keys; the screen won't wake up no matter how you wave at it. You have to manually tap the 🔒 icon on the lock face to wake it up before scanning. Effectively, entering and exiting in quick succession ends up being slower than with the old model.The door sensor isn't universal—it comes with a magnet meant for the door frame to detect open/closed status, but it didn't fit my door. Fortunately, they included a spare adhesive magnet strip. I recommend checking compatibility before installation.Pros: Palm vein recognition is fast, stable, and unaffected by wet hands; built-in Wi-Fi allows for convenient remote control; supports Apple Home and Alexa.Cons: You have to practice the timing of your hand movement; it goes into a deep sleep if you enter and exit quickly; the door sensor accessory might not fit. If you live in an apartment like I do, the major advantage of solar charging is lost—it won't charge at all, so you have to remove the battery and charge it via USB-C.Overall, it’s far better than my previous lock. It’s not perfect, but it solves the core pain points. Once you get used to its quirks, it’s very smooth to use daily. If you’re fed up with Bluetooth disconnections and fingerprint recognition failures, this lock is worth a try.