1. Mini size
2. Combined use of wind closed port + sonic port, the driving effect is more significant
3. Small handle with tape on the back, easy to disassemble
4. Acrylic adhesive on the back, good adhesion, leaving no marks
5. Material: ABS
6. Suitable models: most cars can be used
7. Size: about 3x1.7x1.3 cm/piece
8. Weight: about 3g/piece
