"The Kettler Coach M Rower replaces the popular Coach LS. The main difference is the new increased length of the machine, which enables a longer stroke, therefore better workout. For extra space saving, the unit balances on its end. Coach M has a non-wear magnetic brake system and centre-pull mechanism. The computer comes with an integrated POLAR compatible receiver for use with the included chest belt. It also measures all the important training information including time, total km covered, oar strokes, stroke speed, calorie consumption, room temperature, averages values at the end of session. If you need further advice on this item, or simply wish to order by phone, call 0800 018 5294 - (this is a freephone number from a landline but some mobile networks may charge, so you may wish to use 0161 678 9836). Telephone hours: 8.30am to 5pm Mon-Friday, 10am-4pm Saturday."