1 Japanese,Korean,Chinese,Russia,English 2 rechargeable, car use&indoor use 3 12 volt or AC100-240 4 ... Material: 16*64 dots SMD leds, plastic casingNew design, indoor use & car useBracket can be 360 free rotation.Materials: ... (about 10 - 15 years)Protection degree: IP54, indoor use onlyWe will attahed a disc when the goods shipped ... will know how to use it.Picture:Other indoor led display available,