Features: 1) Industrial CDMA module 2) Menu in English and Chinese 3) Phonebook: operations of missed calls, incoming calls and outgoing calls 4) Hands free 5) ID call: supporting CID display 6) Standby battery available: built-in Li-Ni battery of 3.6V / 700mAh, average operating time of 15 hours for standby / 3 hours for communication 7) Presets local prefix, IP access number: follow traditional dial plan. System adds local prefix and IP access number automatically 8) Presets local handset numbers and blocked numbers: judge local or long-haul call by local handset numbers, make routing decisions, number block setting helping money-saving 9) Clock and calendar 10) CDMA 1X wireless online 11) Removable UIM card Specifications: 1) Air interface standard: IS-95A/B, CDMA 2000 1X 2) Frequency: 800MHz 3) Power supply: 110 ~ 240V AC, 7.5V DC 4) Working temperature: -10 ~ +50°C 5) Working humidity: 10% ~ 95% 6) Air pressure: 86 ~ 106KPa