https://devzone.nordicsemi.com/f/nordic-q-a/23373/beacon-data-lengthCurrently, I&#39;m developing a beacon. We would like to employ a beacon to send a package including a IP address to other device for getting a new message from the website. I&#39;ve study the example of ble_app_beacon. In that one, the section &quot;ble_advdata_manuf_data_ten-USTelligent Community 13Mon, 10 Jul 2017 05:30:21 GMThttps://devzone.nordicsemi.com/thread/91879?ContentTypeID=1Mon, 10 Jul 2017 05:30:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4c4260a0-f74f-4b54-8076-ba25cfdfb86dendnode<p>You&#39;ve read correctly, the maximum size of ADV packet in BT LE 4.0-4.2 is 31Bytes but in case your device is GAP&amp;GATT (layers&#39;) compliant you need to cut some overhead (3Bytes for &quot;Flags AD&quot; object and 4Bytes of &quot;Manufacturer Specific Data AD&quot; header). So you have 24Bytes in maximum. Note that there is a way to send &quot;another&quot; 31Bytes in SCAN_RSP packet but that must be actively requested by Observer and again you need to count 4Bytes of GAP overhead so maximum 27Bytes. In addition active scanning won&#39;t have such frequency as ADVertising so total bandwidth will be lower... but for transporting quasi-static string in Broadcaster/Observer mode you can employ up to 24+27=51Bytes, you just need to split them (and Observer need to actively scan+reconstruct them back).</p> <p>Read more in any BLE Advertising/Beacon tutorial on the internet.</p><div style="clear:both;"></div>