[Fingerprint+Bluetooth App] Fingerprint Unlocking: Your fingerprint is your key. 0.5s fast identification. Bluetooth application unlocking: it is very suitable for temporary access and sharing through remote authorization of smart phone. No need for keys or passwords, eliminating the trouble of losing keys or forgetting passwords. 【Multifunctional and easy to use】 compact and portable: 46x46x24mm lightweight design, easy to put in a pocket or bag. Widely used: perfect gym lockers, backpacks, suitcases, fences, bicycles, storage units, and so on. [Protective cover] protects the fingerprint sensor from scratches and ensures long-term reliability. Consistent performance in all weather conditions, suitable for gymnasiums, gardens, fences and bicycle locks. 【 Structural features 】 The solid steel shackle made of high-strength alloy can resist cutting, prying and sawing, and can be used for a long time, providing reliable protection for valuables. 【Long battery】1-year standby: charge once and enjoy the standby time of low-power technology for up to 12 months. One-click setting: simple fingerprint registration and application pairing, without complicated installation., Manufacturer: HONGBA