Kenwood TK-3402U16P ProTalk 5 Watt Two-Way Radio, UHF, 16 Channels, Black Color, 5-Pack 16 Total channels More or less 300000 square feet/30 floor/7 mile range 5.0 Watt output power Rechargeable lithium-ion 2000 mah battery pack included Includes drop-in fast battery charger