Solid security for bicycles helps reduce the risk of theft in typical outdoor or urban parking situations. strength alloy steel construction provides robust protection against tampering and theft. 4digit password system offers keyless convenience and reliable access control; set and remember your own code. ABS material cover delivers wear resistance and helps protect the bike finish during handling and lock operation. Foldable and compact design enables easy portability and storage; lightweight to carry in a bag or backpack. Use scenarios: Locking your bike at city racks, train stations, or near shops for short stops during daily errands. Daily commuting or campus use, where you need quick access and reliable protection without carrying keys. Travel or hotel stays, providing portable security for temporary bike parking during trips or overnight stays. Key attributes at a glance: Function: secure locking with a 4digit code for convenient keyless access Material: strength alloy steel body Cover: ABS for wear resistance and frame protection Design: foldable and compact for easy transport and storage Performance: durable protection against theft with a portable, userfriendly solution