Motorola RDU4100 12.5kHz 4 Watt 10-Channel Business Two-Way Radio 2-Pack Bundle 2-Pack includes: 2-Motorola RDU4100 Two-Way Radios, 2-2400 mAh Li-ion Rechargeable Battery, 2-10 Hour Plug-In Charger, 2-Spring Loaded Belt Clip, 2-Antenna Range up to 350,000 sq. ft. or 30 floors indoors,10 pre-programmed channels to communicate with separate work groups 4 Watts of power,89 UHF business-exclusive frequencies and 121 interference eliminator codes Repeater Capability, 3 Voice Scramble settings to reduce eavesdropping AA Battery Compatible (requires 5 AA cells & alkaline battery frame accessory)