Let me start by saying this Teslong endoscope has been a game-changer for my DIY car repairs. The 0.2-inch diameter camera slips into places my fingers could never reach - like that time I needed to inspect cylinder walls without tearing apart the engine. The dual lenses (front and side) are genius when you're working at awkward angles.

The 4.5" HD screen is surprisingly crisp for the price, though I did notice the UI quirk mentioned in reviews - pictures always revert to 0° orientation which can be disorienting during critical inspections. The built-in lights are bright enough for most jobs, though in extremely dark spaces I sometimes wish they were stronger.

Where this tool really shines is automotive diagnostics. I've used it to check brake pads without removing wheels (saving at least an hour per inspection) and to retrieve dropped bolts from impossible places thanks to the included magnetic tip. The 5ft cable gives decent reach, though for some truck inspections I found myself wishing for more length.

The included 32GB microSD card is convenient but feels cheap - mine corrupted after a few weeks. Solution? I swapped in a high-endurance card and haven't had issues since. Battery life is decent (about 3-4 hours of continuous use), and the Type-C charging is a welcome modern touch.

My biggest complaint? The power button requires Hulk-like pressure to activate - not ideal when your hands are greasy. Also, while the image quality is good for the price, it's not medical-grade sharpness. Close-up focus could be better too.

Final verdict? For under $100, this is an incredibly useful tool that's already paid for itself in saved mechanic bills. Just don't expect industrial-grade durability or professional imaging quality.