With its features of small size, easy installation and security assurance, this product contains second generation chip and rechargeable battery, which achieves flawless unlocking more than 1 million times and security guard security of your home and office. Features: - Attractive feature: Small and easy installation, security assurance, second generation battery, rechargeable battery and safe unlocking. - Professional biometric technology: quick identification, semiconductor biometric identification at any angle, quick unlock in 0.5 seconds. - Self-learning algorithm: This product is a patented user-designed product that can record 20 fingerprints. Each fingerprint identification is compared, spliced and recorded every time, which effectively improves the recognition rate and makes the product more sensitive. - Electricity saving: low energy consumption. With the external USB emergency socket, you will never worry that the lock cannot be opened without power. - Wide application: Suitable for all types of door cabinets, bedside cabinets, bedside cabinets, drawer cabinets, desk drawers, mailboxes, fitness cabinets, etc. Features: Material: ABS Black color Identification: 360 degree semiconductor fingerprint identification Number of registered fingerprints: 20 Recognition time: