T28 is perfect for workers, family, and friends to stay in touch. Utilizing the latest technology, the T28 is a compact, rugged and waterproof PTT phone powered by easy-to-use dispatching platform. Equipped with a touch screen, it allows you to quickly choose channels and configure device settings. T28 is built with standard cellular GSM/4G mobile phone network and can be used anywhere there's a mobile phone signal. 4000mAh battery provides extended battery life. More at: www.jimilab.com