Gunalert Gun Lock. Our motion detection and GPS technology sense the slightest movement and alerts you immediately. Unlike competitors using WiFi GunAlert uses cellular technology to send its location no matter where it is. Specifications for Gunalert Gun Locks: Manufacturer: Gunalert Fabric/Material: Hard Plastic/Steel Lock Type: Steel Ring Battery Type: Lithium Ion Features of Gunalert Gun Locks Alerts as soon as your gun is moved. Sends location updates every 5 minutes until your gun is recovered. Location data is never stored on our servers. Easy to set up and use with our mobile app. Package Contents: Gunalert Gun Locks Charging Gunalert GL320MG: Gun Lock