Larger Pole-style buoy suitable for full-size sailboat racing.  Now equipped with LoRa control board with one-mile range and 200 ft 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)
 
Weight 20 lbs
Height 51 inches
Diameter-tube 4.5 inches (5.0" caps)
Bumper width 14 inches
Battery type LiPo, 2S, (8.4V)
Battery capacity 15 Amp-hour
Idle power consumption 130mA
Blue Tooth LE range 200ft
LoRa range 5000ft
Radio control input capable (2-channel)
Brushless motors with stainless steel bearings
Warrantee:  One year