Features: – You can do DIY program by mobile phone via Bluetooth any where any time. – Fashion and eye-catching, the best choice for your Trade Show, Party, Conference and Concert. – Maximum save 8 programs, can switch it easily by press button. Show different message in different time and situation. – Party, exhibition, restaurant, waiter, guider, model car, model bus, driver, promotion, sales person, as a LED sign, you can use it any place.