Concox AT4U is a rugged asset GPS tracking unit with a 10,000mAh battery, a powerful magnetic mount, and a built-in MIC for voice monitoring. It operates over 3G (850/900/1900/2100MHz WCDMA and 850/900/1800/1900MHz GSM). The device features an intelligent power management system, a tamper alert, and more. The casing complies with IPx5 rating making it resistant to water spray.