1. Fully automatic 3D face + active intercom cat eye, semiconductor fingerprint head 2. High-performance chip, capture while staying, 4200 mAh lithium battery 3. Infrared 3D face recognition RGB, C-level lock cylinder, anti-technical violent unlocking, anti-small black box unlocking 4.4-inch high-definition IPS screen + 1 million pixel lens, active intercom + capture and transfer pictures and remote unlocking 5. Outdoor USB emergency power supply + mechanical key, indoor quick-open escape function, double safety protection 6. Unlocking methods: fingerprint, password, key, card, WeChat, APP remote, 3D face recognition 7. Material: Aluminum alloy fingerprint-free powder coating + tempered glass panel, size: 395*73*68mm