Features 1??The recognition rate of the optical fingerprint module is much higher than the popular scratch fingerprint recognition module on the market. 2??Up to 120 identification fingerprints can be stored, the first three fingerprints are the administrator's fingerprints, and new fingerprints require administrator approval. 3??Equipped with safety rope which is made of stainless steel, will not rust, you can use the safety rope to fix the safe in the car or on the bed. 4??Low voltage prompt, when the battery is low, it will ring three times each time the safe is opened, and the LED indicator will flash three times, indicating that the voltage is insufficient, reminding the user to replace the battery. 5??Equipped with spare keys, the spare key is not controlled by the electronic door closing system, so you can use the spare key to open the device and replace the battery when there is no electricity. 6??With strong cold-rolled steel plate, each safe is equipped with stainless steel wire rope and elastic band, memory foam padding in the box to ensure that the contents of the box will not be damaged by external force. 7??A4 paper size, 50mm/2.0in thickness, this device can be placed in a suitcase for easy portability, and can also be placed on a desk, drawer, bookshelf, or in a car. It is compact and does not take up space 8??4 AA alkaline batteries (not included) for power supply, support rechargeable batteries, there will be a reminder to replace the battery when the power is insufficient, the sudden power off is fine, the stored fingerprint can continue to use. Specification Conditon: Item Type: Portable Security Box Material: Cold-Rolled Steel Plate Color: As Pictures Shown Optional Size: Approx. 275 x 190 x 50mm/10.8 x 7.5 x 2.0in Approx. 325 x 190 x 50mm/12.8 x 7.5 x 2.0in Unlocking Method: Fingerprint/Spare key Fingerprint Type: Biological Fingerprint Surface Treatment: Spraying Plastic Power Supply Type: 4 AA alkaline batteries (not included) Working Voltage: 4.8-6.5V Resolution: 500DPI False Rejection Rate: ??0.01% False Accept Rate: ??0.0001% Package List 1 x Biometric Fingerprint Safe Box 1 x Elastic Band 1 x Steel Wire Rope 2 x Spare Key 1 x Instruction Manual (English)