The model E’s seat stands 6 inches higher. And while the model D’s monitor rests on an adjustable arm, the E’s sits on unbending metal. These few technical differences do nothing to impact ride feel. We recommend the $200-cheaper model D as the best buy, but the Concept 2 E will appeal to anyone who values a higher seat and more solid construction.
Don't know why, perhaps due to rising demand and production bandwidth, but be forewarned quality control is an issue. Assembly is easy enough, though have gap where back separator does not fit snugly after tightening nuts as firm as they will go (see pic). No water level sticker on tank received, so had to measure water manually according to calculations (4 gallons). Siphon was not air tight (even though release valve closed firmly), so had to manually pump instead of siphon. S4 monitor only flashes, not working as of yet and now have to take a apart top of unit to figure out why, currently not resolved after verifying connections and looking at simple solutions on website.

When a product is listed as Pre-Order, such product is not yet in stock but is available for advanced purchase on our site, prior to the manufacturer's public release date. Pre-Order items are shipped once in stock and the public release date arrives. You will be notified of a product's updated status by email. The expected shipment time is listed on the Product Detail page.
The Challenge AR features an advanced computer monitor providing the rower with measurable performance output, an ergonomically designed seat that rides on precision bearings and rollers for absolute smoothness, an upgraded footboard with advanced heel support, and an innovative soft grip handle to eliminate stress on the hands and wrist during the comfortable, but physical workout.
The WaterRower Natural rowing machine is handcrafted in solid ash wood, stained Honey Oak, and finished with Danish oil. Wood is an excellent material for this application due to its ability to absorb sound and vibration enhancing the WaterRower's smooth, quiet operation. The Natural, as with all WaterRowers, features patented WaterFlywheel technology, unrivaled in its replication of the resistance felt in on the water rowing.
The WaterRower Club is handcrafted from solid Ash wood, finished with a black and rose stain and danish oil. The WaterRower's patented WaterFlywheel has been specifically designed to emulate the dynamics of a boat moving though water and is unsurpassed in its simulation of the physical and physiological benefits of rowing. WaterRower will not provide support or documentation for any product transported outside of the original country of purchase
The proper ratio of effort is about 75 percent lower body and 25 percent upper body. Ensure you’re hitting that by driving through your legs and keeping your hands relaxed. Posture plays a big part, too. Concept 2 recommends imagining your upright profile at noon and tilting from the 11 o’clock position (drive) to the 1 o’clock position (recovery).
The First Degree Fitness Challenge AR (Adjustable Resistance) is designed and engineered by professional rowers and craftsman using only the highest degree of quality components – ensuring complete satisfaction in function, performance, and reliability.  With its patented Fluid Technology, First Degree Fitness has incorporated the truest emulation of sensation, sight, and sound of real on-water rowing captured in the private setting of your own home.
Comparing the rowing machine to the stationary bike, the rowing machine is superior in terms of calories burned. Yet, it’s important to note that the stationary bike is also easy on the joints and only includes the lower body. So, if you have any upper body problems then the stationary bike will be a much better choice. In 30 minutes of cycling 12-13 miles per hour, an 125lb individual will burn around 225-250 calories.
The dense resistance of water creates substantial drag, but on the WaterRower models, this is perfectly tempered by a whippy cord. It coils and recoils with such steady speed that one tester noted how the Classic “eats the rope back up on recovery.” This smooth agility helps balance out the impact of encountering slow water at the start of every stroke.
The dense resistance of water creates substantial drag, but on the WaterRower models, this is perfectly tempered by a whippy cord. It coils and recoils with such steady speed that one tester noted how the Classic “eats the rope back up on recovery.” This smooth agility helps balance out the impact of encountering slow water at the start of every stroke.
Noise level is another large factor that tips the scale more towards water rowers. Air rowers make a fairly loud “whooshing” noise every stroke, which makes them bad for people who like watching TV, have sleeping children, live in apartments, or like working out early in the AM. Water rowers do make some noise but the splashing of water in the tank is a lot quieter and more soothing than the fan noise produced by air rowers.
I teach pilates and also have several pieces of cardio equipment for my clients to warm up on. I bought a Hi, Rise Club Water Rower model a few years ago . as it turns out, my hard core bikers and elliptical walkers really did not use the Rower. SO it is in great shape. A beautiful piece.  I could not get a good photo in my house as there was not enough light, but if you Google this, you can see just what it looks like. 
I loathe exercise. Will do almost anything to avoid it, like holding down a couch or going to wash a car. But the time came to find something that I could do that would get me into regular exercise and make the most of the time. After researching, I found that rowing was almost universally lauded as a great full body workout that does not abuse your joints, and requires only a minimal time commitment. After searching and researching , the Water Rower consistently came out at the top of the pile. So I spent the big bucks and ordered one.
The dense resistance of water creates substantial drag, but on the WaterRower models, this is perfectly tempered by a whippy cord. It coils and recoils with such steady speed that one tester noted how the Classic “eats the rope back up on recovery.” This smooth agility helps balance out the impact of encountering slow water at the start of every stroke.
Rowing has long been recognized as the perfect aerobic pursuit, with naturally smooth and flowing movements that don't tax the joints but do boost the heart rate. Now you can take your rowing experience to the next level with the WaterRower Classic rowing machine. Using the same principles that govern the dynamics of a boat in water, the WaterRower Classic is outfitted with a "water flywheel" that consists of two paddles in an enclosed tank of water that provide smooth, quiet resistance, just like the paddles in an actual body of water. As a result, the machine has no moving parts that can wear out over time (even the recoil belt and pulleys don't require lubricating or maintaining). More significantly, the water tank and flywheel create a self-regulating resistance system that eliminates the need for a motor. As with real rowing, when you paddle faster, the increased drag provides more resistance. When you paddle slower, the resistance is less intense. The only limit to how fast you can row is your strength and your ability to overcome drag. And unlike conventional rowing machines, which tend to be jerky and jarring, the WaterRower Classic is remarkably smooth and fluid.
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