The WaterRower Oxbridge is hand crafted in solid Cherrywood. Like all woods, Cherrywood may vary in color from a red-brown to deep red. The wood will darken in color with exposure to light. For this reason all WaterRower Cherrywood components are kept in light free rooms to protect from shadowing. A new WaterRower Oxbridge will therefore appear quite light in color. The wood will however darken over time reaching a rich reddish hue. Each machine has been hand finished with three coats of Danish Oil giving a deep luster an warmth to the wood. Wood has been chosen due to its marvelous engineering properties, primary amongst these is its ability to absorb sound and vibration enhancing the WaterRower's quietness and smoothness of use. Cherrywood, like all woods used in WaterRower construction, is a premium hardwood with incredible longevity and dimensional stability. For reasons of ecology, all our woods are harvested from replenishable forests. The S4 Monitor has been designed with user friendliness in mind. It has been designed for easy QuickStart of most functions, simply press the on button and away you row. Delve a little deeper and there are many more advanced functions for the novice through the elite user. The S4 Monitor displays intensity in m/s (meters per second), mph (mile per hour), /500m (time per 500 meters), /2km (time per 2 kilometers), watts and Kcalories per hour. It Displays Strokerate, Heartrate (with optional heartrate attachment), Distance in units of meters, kilometers, miles and total strokes and duration.