Color:pink/green Material: ABS Product net weight: about 470 grams Appearance size: 198*153*93MM/7.8*6.02*3.66in Fingerprint capacity: 5 pieces Power source: 3 AAA dry batteries(not include) Standby time: about 8 months Applicable temperature: 0-50°C Fingerprint Settings: 1. Short press the "SET" button on the back once, and the green light on the fingerprint interface will remain on, waiting for the fingerprint to be entered. 2. Press and lift the fingerprint within 8 seconds. The same fingerprint needs to be entered more than 6 times. The green light flashes once for each successful entry until it stays on for 2 seconds before turning off, indicating that the fingerprint has been successfully entered. 3. Use registered fingers to cover the fingerprint interface. If the fingerprint verification is successful, the green light will stay on for 2 seconds and unlock it. Attention: The red light flashes twice, indicating that the fingerprint verification has not passed. Please press the fingerprint verification button again. 4. Long press the "SET" button on the back for more than 3 seconds to clear all fingerprints. Flashing the green light 5 times indicates that all fingerprint books have been successfully removed.