1): LED display music function:  MP3 music stereo output, can store 30 music.
2): Character Size: 1.5-or 2.1-or-4.8-7.2 or 9.6inch Characters.
3): Character Color: Mono/Multi-color/Rgb Characters.
4): Message Input: Remote Control or PC message entry.
5): Max. Viewing distance: 450 ft.
6): Message Capacity: 100 different messages can be stored and displayed.
7): Outline border: Aluminum alloy enclosure.
8): Power: 100-240V AC,12V or 24V DC.
9): Sign memory: 512k bytes.
10): Memory Retention: 10 years.
11): Message presentation modes: 26 Modes.
12): Online update firmware.
12): Real-Time Clock: Date and time, 12 or 24 hour format.
13): Operation Temperature: 32 to 158ºF, (0 to 70ºC)
14): Humidty Range: 0% to 95% non-condensing.
15): Power cord length: 1500mm.
16): Mounting: Hardware to accomodate ceiling or wall mounting .
17): Optional communication ways: RS232, RS485, USB,TCP/IP,Wireless,GSM, GPRS.
18): Provide secondary development SDK. Provides sample code, technical support.