Product size and color: manual knife sharpener, 9.5 x 4.5 cm, black. Material and build: made of plastic, lightweight yet durable with a sturdy structure designed for longterm use. Portable design: compact and easy to store; ideal for at home or outdoor use and can sharpen knives anytime, anywhere. Easy operation: simple to use with only a few steps; suitable for all ages and skill levels, helping you sharpen efficiently without professional training. Performance and compatibility: effectively sharpens a wide range of kitchen knives with reliable, consistent results. Practical use scenarios: In the home kitchen for routine sharpening of everyday knives (chef, utility, paring, and more). Outdoor activities such as camping, picnics, or fishing trips where ready access to sharp knives is helpful. Travel, dorm, or office settings as a compact backup sharpener to maintain blade edge on the go.