You can do DIY program by mobile phone via Bluetooth any where any time. and eye-catching, the best choice for your Trade Show, Party, Conference and Concert.Party, exhibition, restaurant, waiter, guider, model car, model bus, driver, promotion, sales person, as a LED sign, you can use it any place.Show different message in different time and situationSupport Chinese, English, Korean, Japanese, Russian, Spanish and so on.Type: Black Frame Red Font Four CharactersColour: BlackMaterial: ABSSize90 x 30 x 6mmPackage Contents:1 x electronic badgeOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.