Designed for radio-controlled sailboat racing. Now equipped with LoRa control board with one-mile range and 200ft Bluetooth LE range. (LoRa range is between buoys, not between phone and buoy. You will need a buoy nearby to act as a hub/translator to control distant spoke buoys.)
 
Kit does not contain everything needed for complete buoy.
  -Colored barrel, foam, ABS pipe, fittings & cement not supplied.
Barrel color options:  white, red, blue, yellow, orange, green
Now equipped with LoRa control board
    Bluetooth range 200ft
    LoRa range 5000ft
Radio control input capable (2-channel)
   5V BEC provided for RC receiver
Brushless motors with stainless steel bearings
Battery and charger included
Warrantee:  One year