Motorola On-Site RDU4100 10-Channel UHF Water-Resistant Two-Way Business Radio Up to 4W Power (2W low power setting). Pre-Programmed to 10 Channel / Code Combinations. 38 Analog and 83 Digital Interference Eliminator Codes. Two Programmable Buttons. 22 Hours Battery Life. Two-way radio with up to four watts power (two-watt low power setting); pre-programmed to 10 channel/code combinations; two programmable buttons 38 analog and 83 digital interference eliminator codes; 22 hours battery life Designed to IP-55 and MIL-SPEC specifications; channel scan with selectable scan list Three voice-inversion scramble settings to minimize eavesdropping; three audible call tones VOX with three sensitivity levels; tri-color LED with transmit, receive, and low battery indication; two-pin accessory plug