1. Default password: "0000"
2. Turn lock core head to the right
3. Rotate combination dials to set new password
4. Turn lock core head to the left to complete setting
| Width | 8.4 |
| Height | 2.8 |
| NetWeight | 0.1 |
| Brand | ROCKBROS |
| Product Type | Combination Helmet Lock with Alloy Lock Head |
| Lock Type | 1-digit combination anti-theft lock |
| Cable Material | Retractable steel cable with PVC thickened coating |
| Cable Diameter | Approximately 4.6 mm (0.182 inches) |
| Cable Length | Extends up to 130 cm |
| Lock Body Material | Zinc alloy with smooth touch and durable lock core |
| Combination Dial Material | ABS plastic, flexible rotation |
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| Dimensions | 13.5 cm x 6.5 cm (approximate, manual measurement with 1-3 cm error) |
| Design | Compact, cute cat-themed shape, fits in one hand and pocket |
| Operation | Keyless unlocking with 4-digit password, supports up to 10,000 combinations for enhanced security |
| Note | All measurements are manual and may have a 1-3 cm deviation |