No. The upper-body arms cannot be locked in a fixed position, so there is no legs-only mode with a static bar to hold. Whenever the cranks turn, the arms travel with them. A legs-only effort is ridden with your hands riding along on moving handles, and an arms-only effort is ridden with your feet still on the pedals. It is the single biggest difference between this machine and a dual-action bike with lockable handles.

No. The crank arms are linked and the machine is fixed gear. There is no freewheel, so the pedals keep turning for as long as the wheel is turning and you cannot coast. Slowing down is done through the pedals and the gear selector, and Gear 88 is the emergency brake when you want the drive stopped quickly. Riders used to a freewheeling exercise bike notice this in the first minute of the first session.

300 lb. Rider height runs from 4 ft 10 in. to 6 ft 10 in. over the same frame. The machine's own weight is a separate figure at 112 lb, and the floor carries that before anyone gets on.

4 ft 10 in. to 6 ft 10 in., which is 58 to 82 in. The seat does the fitting work, adjusting in four directions, up and down and fore and aft. It is also wider and more cushioned than the saddle on a standard M3i Indoor Bike, which suits a rider sitting more upright to work the arms.

54 in. high, 29 in. wide and 49 in. deep, at 112 lb. That makes it taller, wider and heavier than every other bike Keiser builds on the M3 platform, and the extra width is the upper-body arm assembly. Check the doorway on the way in and leave clearance overhead, because the arms swing above the frame line while you ride.

Yes. Bluetooth on the M Connect Display reaches the Keiser M Series App for a rider training alone and the M Series Group App for a coach watching a room of machines in real time. Everything on the screen travels with it, arms and legs read as one effort: cadence, power, Kcals, heart rate, ride time, odometer, trip distance and gear.

No, they share one setting. The upper-body arms and the pedals drive one magnetic resistance system, so a single gear between 1 and 24 sets the load at both ends and there is no second dial for the arms. Push and pull on the handles while your legs turn and what you feel is one load, reported as one power figure on the M Connect Display. The eight readouts on the screen are therefore the same eight whether you are riding with your arms, your legs or both, and Gear 88 stops the arms and the cranks together. Changing gear changes it at both ends at once, so an interval that is hard on the legs is hard on the arms in the same measure.

24, numbered 1 to 24 on the M Connect Display, with Gear 88 held above the range as the emergency brake. Resistance is magnetic and moves in infinite increments, so the gear number is a reference point a coach can call while the resistance itself moves continuously. The M3i Indoor Bike carries the same 24 gears on the same display.

The M3i Indoor Bike is a seated indoor cycle with a fixed handlebar. The Total Body Trainer adds movable upper-body arms on the same drive, a wider and more cushioned seat, and a bigger frame at 54 in. high and 29 in. wide against the M3i's 49 in. and 26 in. Both carry the M Connect Display, the same 24 gears, magnetic resistance and a self-tensioning Poly-V belt. The Total Body Trainer takes a rider of up to 300 lb, at heights from 4 ft 10 in. to 6 ft 10 in.

No. Power for the display comes from two AA alkaline batteries, and the magnetic brake it reports on takes none at all, so nothing about a 112 lb dual-action machine depends on where the sockets are. Site it for the 54 in. of height and the arm swing instead.

Three years, all inclusive, with labor and wearable parts sitting outside that cover and the wearable parts carrying ninety days of their own. One M Series cardio warranty covers a gym, a team facility and a spare room alike. A machine exported out of the US is outside the cover unless it was bought through a Keiser distributor or dealer in the country it is installed in.

Yes. It is built to ISO 20957-1 Usage Class S, the studio and commercial class, at Accuracy Class A for the power readings on the display. Keiser builds it in Fresno, California, and the warranty on M Series cardio equipment draws no line between commercial and residential use.