1. White letters on black background make it easy to recognize the human eye.

The color scheme is the same color scheme as the chalkboard, making it easy to recognize.

2. The wire diameter is 0.16 inches (4 mm) and is thick to the limits of the key structure.

3. Even if you stretch the wire, it can extend up to 3.3 ft (1 m).It usually fits a compact size of 5.9 inches (15 cm).

4. The dial can be gripped and rotated, so it can be adjusted smoothly than anything that is pressed and turned.

5. You can change the recitant number without the need for other tools that are common with thin pins, so you dont have to worry about wasted time.

6. Can be used as a replacement of chain lock for bicycles or as a wire lock for bicycles.

7. The wire and dial lock are integrated into a security wire, which can prevent the bag from theft when you are out or traveling on a bullet train.

8. The wire and dial lock are integrated so there is no need to hold wires and keys separately.