Features: Brand new and high quality. Intelligent fingerprint recognition ensures accurate identification. Long battery life, can be charged via USB interface. Lasts up to three months after a 3-hour charge. Fast recognition within 0.5 seconds. Low battery warning alerts in advance to prevent power loss. Stores up to 20 sets of fingerprints for convenient use. Quick fingerprint identification capability. Constructed with waterproof, rust-proof, shear-resistant, and saw-proof materials for safety. Made of zinc alloy or aluminum alloy, tested to withstand up to 650kg of pulling force. Three color options available. Specifications: Material: Zinc Alloy/Aluminum Alloy. Size: Approx. 8 x 2.2 cm / 3.15 x 0.87 inches. Color: Black/Red/Silver. Note: Charges via Type C. Allow 1-2 cm variation due to manual measurement. Product color may differ slightly due to monitor settings. Package includes: 1 Piece Fingerprint Lock.