GSM standardHigh-quality voice services (FR, EFR, HR speech coding)Support emergency call serviceSupplementary services: such as emergency calling, caller ID, call forwarding, call waiting, call hold, three-way callingSupport short messageFMLarge-capacity phone book (200)Secondary dial DTMF supportUser personalization volume settingRinging tone sung live supportScreen backlighting functions providedTNC antenna interface can be connected to indoor antennaStandard TNC antenna interface can be connected to indoor and outdoor antennaOffers a variety of security solutions, such as lock network, lock card, lock cell, interlock machine card (optional)Product SpecificationsDimensions (L ? W ? H): 196 mm ? 152 mm ? 51 mmWeight: less than 700g (including battery)Switching Power Supply: AC: 100V ~ 240V; DC: 5.00V, 0.65ABackup Battery: Type: NiMH; Capacity: 3.6V 600mAh,Typical Talk Time: (according to your network environment) 2.5 hours (battery capacity 600mAh); Typical Standby Time: (depending on the network environment may be) 150 hours (Battery capacity 600mAh)External Interface: USB data interface; support USB 1.1, used for data configuration; Antenna Interface Type: TNCDisplay: 128X64 dot matrix LCD displayStandard accessories: Fixed host, handle, reel, rechargeable battery, power adapter, indoor antenna, user’s manualFrequency: 900MHz/1800MHzMaximum transmit power: 33 ? 2dBmReceiver sensitivity: GSM900M: better than-105dBm; DCS1800M: better than-104dBmLanguage English Chinese