คุณสมบัติเครื่องอัดเสียงโทรศัพท์: Hand free Speed dial Voice + SMS Two-way SMS Elegant design Volume adjustable Emergency calls Caller ID display Industrial grade GSM module Large LCD operation interface Backlight LCD with status icons Clear voice, stable capability IP pre-setting to save call cost Alarm&Calender&Calculator function Long battery stand-by and talking time Lock card,lock phone,change password for security Large-capacity phone books and call records Menu driven interface for easy operation and configuration Applies to E-GSM 900/1800MHz mobile communication network Incoming and called numbers memory(Includes number, time, duration, etc.) Call Waiting, Call divert,Call barring,Call time reminder(per minute),Auto redial