All USA/International/Canadian marine channels. Ultra compact rugged construction. DSC (Digital Selective Calling). Quik Commandô One-Touch Ch 16//9 key on mic. Backlit keypad. Triple Watch Plusô - Allows you to monitor emergency channel 16 and 9, another user selectable channel plus weather alert. Also features: Memory Scan, Weather Alert, Weather Scan, 1 Watt/25 Watt transmit power, LCD display and dimmer, and external speaker jack. Compatible with WHAM microphone.