Product introduction Main functions: dustproof, waterproof, smash-proof, anti-prying, multi-function electronic handcuff software system device chip connected to mobile phone, mobile phone control on and off, adjustable near, middle and long distance charger key (5-20 meters) ), The prisoner leaves the range set by the police, multi-functional electronic handcuffs equipment with high-decibel alarm and flashing lights, and at the same time, the police ’s mobile phone voice alarm “grabbing fugitives” has a QR code on the back to connect to the mobile phone, and one police can simultaneously monitor Prisoner. Prisoners cannot escape. Electronic handcuffs function electronics packaging mobile phone scanning QR code magnetic charging