Features: Analogue-Digital Compatible Build-in GPS (Optional) Support Voice/Data Encryption 25KHz/12.5KHz/6.25KHz Frequency Bands Changeable, High Frequency Utilization Ration Accord with DPMR standard Loud and Clear voice OLED Screen (... - Update: 2012-05-24

Parameters Frequency Range?400~430MHz Channel Space?6.25KHz Carrier Output Power?4W/1W Receiving Sensitivity?0.35uV Battery: 1800mAh Lithium Stand-By Time: >24 Hours Working Time: >14 Hours (5:90 Working Cycle) Protection : IP57 Functions ... - Update: 2012-05-24