This is the easiest LED sign to use in the world. Use your smartphone and the power of Bluetooth to simply swipe your message onto the sign from up to 30' away. Ideal for a wide range of indoor and outdoor marketing and advertising purposes like real estate, retailers, offices, store fronts, kid's events, tailgating, countdowns, tour buses, bars, restaurants, DJs, dorm rooms, recording studios, vehicle messages, and healthcare facilities. The signs come with the following: 

• Up to 99 messages that are easily changed.
• 200 characters per line and you can send multiple lines.
• Countdown/Countup and Clock feature.
• Rechargeable internal battery that lasts over 6 hours.
• Cables and connectors for charging the battery.
• Can also run on AC power from an outlet.
• 1-Year warranty.
• Suction cups for mounting on glass.