Using 128K advanced encryption technology, till now there;;£¤s no break precedent in the world; Using IOT cloud technology, once the cell phone is lost, other people can;;£¤t open it, you just need to contact your family and ask them opening the lock remotely, of course, you can also open the lock by other mobile phones, tablet PC, computers which connect with IOT cloud; Moulding by zinc alloy pressure casting, robust and durable in use; The surface is processed by vacuum nanotechnology, which features with high hardness, better wear resistance and higher coating bond; International standard five-tongue lock cylinder, pickproof, anti-pull, besides, it can remind you the alarm in abnormal condition; Dimensions:350,325,140mm.