Bought for my husband and has been using it for a year now. Often repairs computers and laptops. This screwdriver greatly simplifies and speeds up disassembly and assembly. Yes, perhaps it does not tighten very tightly, but the husband twists 1.5-2 turns manually with a turned off screwdriver. Some pros: Number and variety of bits. Magnetic mat. Case for carrying a screwdriver and one set of bits. A separate feature is the packaging itself)) - unpacking is a pleasure. Cons below: As such, they were not found. But they include the backlight, which turns on only at the time of operation (rotation) of the screwdriver.