4 Pack of Motorola RMU2040 Two way Radio Walkie Talkies (UHF) 4 Pack of radios and associated accessories. Each radio comes complete with a single-unit charger, 15 hour lithium ion battery, swivel belt holster and 1-year warranty. 2-watt (covers up to 20 floors, 250,000 square feet range), 4 channels (communication groups) total - only 2 channels activated out of the box though. Set to factory default UHF frequencies (good for both inside and outside use). RMU2040 is direct replacement to the RDU2020. Very reliable, simple, heavy-duty radio. Popular with a variety of different industries.