XTREME Waterproof Speaker comes with a 15 Watt Amplifier and Volume and Power Control. This external waterproof speaker enables audio communication in noisy outdoors. With its 15-watt amplifier, clarity is ensured. Suitable for UTV's, chase trucks, base stations and all scenarios where outdoor audio communication is required. Comes with a male 3.5mm mono plug, 15' power lead for direct battery connection, and mountable with speaker hardware or bar mounts. Dimensions are 5in x 4in x 1in and Cable Length is 80in. The M1 and RDM-DB radios can use this speaker without additional adapters or cables. Use of CJ-SPK-DC and SPLITTER-MONO-3.5 is required with some old intercom and radio systems to ensure radio traffic in the headset or helmet kit.