ULAC Lock Tron-XD U-Lock Alu Fingerprint Activated 74mm x 128mm

This amazing biometric fingerprint shackle lock is a true masterpiece of innovation and engineering. It offers an outstanding battery life, allowing you to unlock it 2200 times on a full charge and at least 150 times on low charge. In case of low battery or malfunction, you can unlock it with a key or use a Micro USB and portable charger for a quick temporary charge. It's rainproof, but be careful in severe weather as it may damage the product.

Using this ULAC Tron - XD U - lock is super easy. Just place your finger on the fingerprint sensor to unlock it. When the battery is low, don't worry. You can use the provided key to open it or connect it to a portable charger via the Micro USB port for a short - term power boost. As for maintenance, keep it dry as much as possible. Although it's rainproof, long - term exposure to severe weather can harm it. Regularly check the fingerprint sensor for dirt and clean it gently with a soft cloth if needed. That way, your lock will serve you well for a long time.