I bought this treadmill as a floor model. The treadmill seems a bit wobbly on the 12% incline. I wouldn't try to run at that incline on it. The fan is powerful. It is Bluetooth enabled but only for the ifit app. I don't like that because the app requires a membership and that will run you over $100 a year. I won't pay that so that pretty much makes the Bluetooth aspect worthless. The treadmill does come with a auxiliary connection for built in speakers. These speakers aren't very loud though. Overall I like this treadmill because I got a good deal on it. I can live with the Bluetooth worthlessness and low speaker volume because I bought it to run not as an entertainment piece
To activate the treadmill, you must pay $15 per month. Returning it to Sears.