GPS commentary system Multilingual tour commentary GPS Triggered Removtable earphones socket Extra stronger earphones Unlimited Languages Audio auto play Video auto play Stero audio quality High quality water proof HUB,Sub device design Live commentary Smart Interrution Damage auto detect Backlight Keyboard Industrial Grade GPS module Simple installtion and maintanance Fault isolation Airline style design Support two groups of wired microphones or one wireless Bluetooth microphone Input Auto switch North-South, South-North route when the device power on, No any manual operation needed. Automatic nearest station playing, auto interrupt audio once device exceed Bus stops Compatible with all standard Bus stops auto reporter, can set any languages to play at loudspeakers broadcast Built-in high capacity lithium battery backup power to prevent accidental Power off, affecting the device is working properly Built-in 20W digital amplifier can directly drive an external speaker Support UNICODE code,can support any languages, very useful for driver who do not know a second language