The bkool smart go trainer has a super stable base using telescoping legs to offer great stability whilst riding hard when riding at 30 kph the bkool smart go trainer only produces 75 db with a normal conversation ranging from 40 to 80 db making the bkool smart go trainer virtually silent the bkool smart go trainer works wirelessly and can connect to external bluetooth and ant devices whilst supplying an ant usb to be used with a pc or mac with the ability to plug and pl