The Xiaomi Mijia Rotary Tool Kit (MJDMB001QW) is a versatile handheld device designed for precision tasks such as carving, grinding, polishing, and engraving. It features a brushless coreless motor that reaches speeds up to 22,000 rpm, providing the necessary power for detailed cleaning or drilling work. To ensure flexibility during use, the tool operates in dual power modes, allowing you to run it either via the internal 800 mAh Li-ion battery or by plugging it directly into a power source. Its slender pen-like design, measuring approximately 2 cm in width, makes it comfortable to hold for extended periods, while the 2.35 mm chuck securely holds the included accessories. The kit comes with a variety of attachments, including diamond and abrasive grinding bits, rubber and wool grinding heads, a twist drill bit, and a wool polishing wheel. Everything is housed in a matte ABS storage case, keeping the entire set compact and weighing around 310 g. Charging is handled via a USB Type-C port, which fully replenishes the battery in about 90 minutes.