Marine Radio Package w/ Bluetoth Digital Media Sound Receiver for ATV UTV Boat. Please double check the item before purchasing. All items will be tested in advance before sending out. We will offer replacement without extra charger after we receive the defective item. Due to the recent lack of logistics transportation capacityOnly for orders ordered from Friday evening to Sunday, and logistics and transportation are normal from Monday to Thursday. GUZARE marine series of head units and remotes are fully tested against UV radiation degradation as well as tested to IP66 water intrusion standards. We also fully test the stereo units for every changing environmental conditions that you may experience on the boat or out in the dunes such as temperature extremes, as well as vibration testing to make sure they can take a bump and keep performing as a high standard product. If you are dissatisfied for any reason, please do not be quick to leave negative/neutral feedback. Our working time: Monday to Friday.