Designed for use in demanding environments such as warehouses, the DuraFon ROAM Handset from EnGenius functions as both a long-range cordless phone and two-way radio. This durable handset operates on the 900 MHz frequency with automatic handoff to separately purchased DuraFon ROAM base station units to ensure clear communications as you move from place to place. Both long-range and low-profiles antennas are included to fit your environment. Its removable battery is designed to provide about six hours of talk time and may be recharged in about three hours.