Durable zinc alloy construction This lock uses a high strength zinc alloy to resist environmental damage and protect internal components with a durable, long lasting design. User friendly keyless locking system Keyless four digit password with a simple press-to-lock function makes unlocking easy and locking secure, delivering practicality and ease of use for riders. Strong anti theft protection Offers millions of password combinations to deter unauthorized access while providing reliable theft protection for riders who want peace of mind. Anti rust and weather resistant Constructed from rust resistant materials to perform in harsh environments, delivering water and dust proof performance under varying weather conditions for dependable security. Compact form factor and reliable performance Designed to be compact and lightweight while delivering robust security and durability for everyday use. Use scenarios - Urban commuting: Lock your bike at stores, stations, or work during short stops with quick unlock and secure locking. - Outdoor errands: Park outside cafes or shops during errands; rely on the rust resistant build in varied weather. - Travel and all weather storage: Leave your bike secured in outdoor or semi outdoor locations on trips, confident in weather resistant performance. Material and compatibility at a glance - Material: zinc alloy with anti rust properties - Locking system: keyless 4-digit password, press-to-lock - Security: millions of password combinations - Weather performance: water and dustproof in diverse conditions - Form factor: compact and lightweight design