CrewCom 2.4GHz 2-Volume/2-Conference RP 22 Radio Pack

RF Scheme FHSS with TDMA, Effective Radiated Power 100 mW ( 20 dBm), Receiver Sensitivity -100 dBm at 10-5 BER, Radio Certification FCCID: HSW-CCT24 and IC: 4492A-CCT24, Transmission Range 500 ft. (150 m) under typical conditions; 1500 ft. (450 m) line of sight (Note: Functional range depends on many variables, including RF signal absorption, reflection, and external interference.), Audio Dynamic Range Greater than 90 dB, Conferences 2, Simultaneous Listen Paths True Dual Listen, Volume Knobs 2, Talk Buttons 2, Headset Connector 4-pin male XLR, Microphone Type Auto Detect or Manual Select; Dynamic or Electret, Antenna (2) 2dBi Dipole, Battery Life, Rechargeable Lithium-Polymer Greater than 10 hours, Charging Power Supply Micro USB; 6W AC wall adapter, Charge time for Lithium-Polymer Battery Under 3 hours, Charge time via PC Under 5 hours, Optional Power 3 Standard AA alkaline batteries, Battery Life, Alkaline batteries Approximately 5 hours, Weight (with Lithium-Polymer battery) 13 oz. (369 g), Material Polycarbonate substrate with thermoplastic elastomer overmold, Maximum Altitude 9,842 ft. (3,000 m), RoHS Compliant Yes