Caltta eChat PoC Radio e690 Service Demonstration

e690 is a professional eChat PoC Push-to-talk over Cellular PTT portable radio with rich variety of features. It is equipped with full keypad large color LCD screen light weight long battery life clear and loud voice IP68 and it suits for tough and harsh environment. It is applicable for both commercial and professional users who prefer to make communication over 3G4GWi-Fi networks with rich applications.,

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