Pager. Available in POCSAG or FLEX. 4line alphanumeric available in multiple language formats. VHF, UHF & 900MHz. Beep on bad data or error message alert. Synthesized and hand programmable. Up to 8 minute sequential lockout. Ability to set up predefined group alerts(ex: SWAT). High quality backlighting. 4-line to 2-line zoom. Low battery w/memory retention. Operates on a single 1.5V AAA size alkaline battery.