12v/24v Car Bluetooth Excavator Radio AUX-IN Slot Fm/am USB Mic Mp3 for Hitachi Komatsu Kato Radio Frequency: Bluetooth Tractor Truck radio,all worldwide frequency in unit. You can select different frequency by pressing and holding AST and USB button together, then plus #1 for Europe FM frequency , #2 for USA FM frequency, while #3 for Japan FM frequency Wide Applicatione: Our this bluetooth car radio is an industrial grade product, can be widely installed in any excavators, tractors, trucks, kart, loaders, graders, earth moving machines, etc. All users can listen to music or AM/FM radio through this car speaker Design: This grader truck radio is designed with USB, AUX jack and bluetooth. Just press BT button for seconds then you can get bluetooth. And AUX jack allows to insert 3.5mm audio plug to connect with MP3, iPod, CD. Users can listen to music or radio through them. Waterproof Function: This excavator stereo has passed dust-proof test JIS DO207FI standard and waterproof test JIS DO203RI standard,allows you to use in bad weather, also have a higher resistance to vibration than other radios Easy Install: Designed with furnished pigtail that need to mount with side plates. Radio is furnished with wiring color instruction, helps you to install easily and quickly. Works on a 12 volt system and long time no use will be no battery consumption. Included user manual, that helps you to understand well this product