This bundle includes the Wet Sounds WS-G2-TR Wired Transom Remote for MC-20, a 23' Extension Cable, and the WS-ZX-MC-20 3 Zone ZX Source Unit. The WS-G2-TR Wired Transom Remote offers secondary control for your WS-MC-20-KL unit, featuring back-lit buttons, a rotary encoder volume knob, and marine-grade construction. It controls volume, zone 2 level, track, play, source, and power. The remote can be mounted up to 50 feet away from the WS-MC-20-KL using the included 23' extension cable, with the option to connect up to two remotes using an additional adapter. Dimensions are 5.20" W x 2.57" H x 2.55" D. The WS-G2-EXT-23FT Extension Cable allows you to extend the reach of your WS-G2-TR remote, providing flexibility in remote placement. The WS-ZX-MC-20 3 Zone ZX Source Unit is a high-performance marine media center designed for complete multi-zone audio control. It features a 3.0" ultra-bright full-color TFT display, built-in 4-channel Class D amplifier, and supports Bluetooth streaming, USB MP3 playback, and SiriusXM-Ready capability. The unit offers 3 fully independent zones with per-zone enable/disable, custom naming, and balance control. Audio performance is enhanced with a 7-band graphic equalizer and independent crossover configuration per zone. The WS-ZX-MC-20 also includes AM/FM/Weather Band tuner with 27 presets, and versatile connectivity options such as 3.5mm auxiliary input and NMEA 2000 connectivity. Dimensions are 5.1" W x 3.99" H x 4.20" D, and it is IP65 rated for marine environments.