The WaterRower M1 is WaterRowers first full commercial model. The frame is beautifully constructed from fabricated tubular steel. It is available in two versions, HiRise and LoRise. The LoRise has a standard entry level of 30cm (12"). This rower comes with a full 3 year commercial warranty. Variable Water Resistance Optional Telemetric Heart Rate Monitoring Calibrated For Speed and Distance PC Link Mini USB cable for connection to Waterrower's online community www.we-row.com via PC or MAC Free Delivery Options Two Man delivery on this product - due to heavy weight (we will call you to arrange a suitable date) Installation Service Installation service available - click for details Confused by all the options? Call the store FREE on 0800 4580 081