Bluetooth Marketing Device - Version 1.0 BlueMagnet BX28 is a Bluetooth Marketing Device and Bluetooth Advertising Device that is ready to use out of the box. Configuration is very easy and it covers a very good range thanks to its strong Bluetooth transmitters. In addition to that, it can contact up to 28 cell-phones simultaneously, so, if your business is located in a very busy location; you'll not lose any opportunities. You can also use the BX28 to send your business cards and lottery tickets in addition to your normal Bluetooth advertisements.Main Features:-1. Advertise your business 24/7 all year long for FREE.2. Send advertisements to any device within a range of 250 meters (4 Long-range Bluetooth antennas included).3. Contact up to 28 devices simultaneously.4. Easy to use. No technical experience is required.5. Ready to run out of the box.6. Requires permission from the device before sending