Product Details  Well designed for high-performance, feature-rich and low cost. It supports following frequency band for worldwide use.  General : * CDMA2000 1x Compatible *Backward compatible to IS-95 *Fixed Wireless Phone *LCD 128 * 64 dot matrix graphic *200mm x 175mm x 67mm  *Antenna :TNC * Weight: *Supports R-UIM or No -UIM Electrical: *RF complies to IS-98E (Band class-0/1) *Phone Memory Size: 32+8 Mbit Flash+SRAM *Supports 25 Keys *Keypad light *Hand-Free Speaker *3pcs 1500mAh Ni-MH Batteries *USB Charging Support  100hrs  2 hrs Environmental Spec : *Operating Temperature:-10°C 50°C *Storage Temperature:-40°C 85°C' *Humidity: 5% 95% Software Features : *Phone book Size: 200pcs (phone) 200pcs UIM card *Message Size: 200pcs (phone) 40pcsUIM Card *Calendar *Schedule *Alarm Clock *Language:   Chinese/English  Optional Language :  Traditional Chinese  Spanish  Indonesian  Other languages can be added *Ringer: MIDI Music *Intelligent Inputs *Call Forwarding *Call Waiting *3-Way Calling *Voice Mail