Internet Technology Co., Ltd. Shanxi CMO: simplex communication means at the same time, the information can only be transmitted in one direction, I hear you say radios models, I say you listen. This can only work alternately transmitting and receiving Kenwood walkie-talkie type, radios do not work while the machine is called a simplex. Duplex communication means at the same time information can be bi-directional transmission of military walkie-talkie type, and phone models, like walkie-talkies, but also to listen to say, I said, listen. Internet Technology Co., Ltd. Shanxi CMO: Hytera: supports 13 different languages ??(English, Simplified Chinese, Traditional Chinese, German, Spanish, French, Italian, Polish, Russian, Turkish, Korean, Greek and Portuguese ), the user may need to choose their own language. PD780 / 780G support of a key call features include text messaging, voice calls and supplementary services. Explosion-proof walkie-talkie type, Shanxi CMO Internet technology (certified), walkie-talkie type provided by the Shanxi Taigu Internet Technology Co., Chi Mei. Shanxi Chi Mei Internet Technology Co. (www.sxqmhl.com) (www.sxqmhl.com) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to society, and are welcome new and old customers throughout the visit, sincere cooperation for a better future. Shanxi CMO Internet technology - your reliable friend, Company Address: Taiyuan cloud Lu Jie Qi Venture Building, Room 8808 on the second floor (opposite the government Yingze), Taiyuan Lu Yu Pu country too big electronic Chengerlou 3205A number, contact Person: Li Chi-ming.