Elevate your home security with the Smart Hand Fingerprint Door Lock, available in both Square and Round styles! Embrace modernity and simplicity with a <1 second scanning time and a service life of 10,000 times. The sleek black and champagne colors, along with the durable aluminum alloy material, make this fingerprint lock perfect for any home. The semiconductor fingerprint technology allows for up to 22 groups of fingerprints to be registered. In case of emergency, use the USB emergency power supply or the included mechanical key. With a quick recognition speed of 0.25 seconds, this lock is powered by a long-lasting lithium battery and can withstand temperatures from -20 to 55 degrees Celsius. Choose from either the Square or Round style to suit your personal preference and enhance your home security today!