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Sigma ROX 9.0 Triple Wireless Computer |  | Brand: Sigma
Category: Sports
List Price: $249.99
Buy New: $169.99
as of 9/9/2010 06:40 PDT details
You Save: $80.00 (32%)
New (13) from $169.99
Seller: The-Tech-Depot
Rating:  9 reviews
Sales Rank: 55024
Color: Black
Shipping Weight (lbs): 1
Dimensions (in): 8 x 7 x 2.5
MPN: 09170
Model: 9170
UPC: 750220091707
EAN: 0750220091707
ASIN: B001NH3GWS
Release Date: April 14, 2009
Availability: Usually ships in 1-2 business days
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| Features:
| • | 73 Function Bicycle Computer | | • | Wireless Speed, Wireless Cadence, Heart Rate, Downloadable | | • | Altitude, Gradient, & Temperature | | • | Customizable Screen | | • | Low battery indicator for computer head and transmitters. |
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| Editorial Reviews:
Product Description
Clear display with zoom for top segments. Details from 7 trips can be saved and stores all total values since start-up divided into cycling; separated by Bike 1 Bike 2 and Bike1+2. 63 functions with the added ability to customize displays between mountian and road settings. ROX 9.0 includes docking station for Sigma Data Center. All models are PC compatible with syncronization manager, battery status display for computer and transmitters, display for remaining log memory available, and bike computer set-up via PC; log option only for the ROX 9.0 provides detailed graphical analysis of trips.
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| Customer Reviews:
Showing reviews 1-5 of 9
 Good option for data July 27, 2010
Nathan Allen (Philadelphia, PA)
I've had the Rox 9.0 for several months now and it has worked well, I've been happy with my purchase. Here's the rational I used to pick it:
Non-GPS vs GPS: I primarily mountain bike, which causes problems for GPS systems due to terrain interference. Plus I have GPS on my smart phone that logs a map of my location, a second GPS is overkill. I like the accuracy of a wheel measurement of distance travelled.
Rox 9.0 vs 8.0 : the 9.0 can store more rides and it comes with the docking station, the price of the docking station is almost the difference in price between the two.
Topline 2209 vs. the Rox: The Topline can only store one ride's worth of data, I tend to get in a hurry and forget to download data to the computer after every ride. Both use the STS sensors. I initially bought the 2209 only to find out that the docking station wasn't available for it, making the download capabilities meaningless. Also, it's not that much cheaper that the Rox 9.0 when you take into account the cost of the docking station (if it ever become available, it doesn't work with the Rox station.)
Sigma vs Polar, Vetta models: Polar has a good HRM, but their speed sensors have been marginal in my experience (they've lost connection with the computer repeatedly.) The computer download methods Polar uses are laughable, sounds and IR transmission? Really? Neither worked even 25% of the time on my Polar 720i, which was top of their line when I bought it. Give me a metal to metal connection. Also the Sigma gives a heads up display of the grade of the hill I am riding, a nice bit of data.
Works great except when it is cold February 17, 2010
N. Marolf (Los Angeles)
4 out of 4 found this review helpful
I've had the Rox 9.0 for about a year now and in December when I started up my morning training regimen, I noticed it worked sporadically. I eventually figured out that when it is below about 50F, the 3-volt battery just doesn't produce enough power to run the head unit.
So, buy this unit if you don't think you will ever ride in colder weather - at elevation or on cool days in the fall/winter. Otherwise, you might want to look into something else. I really enjoy the features and layout of the Rox, but when it doesn't work, features don't really matter.
And, yes, the battery is fine, I measured it with my multimeter and it doesn't need to be replaced. The battery works fine on warm days in the sun. Sigma would do well to increase the battery power to properly run all the functions.
Oh, and I've waited 3 weeks for a response from customer service - haven't heard anything after two emails.
Great product with lots of info and horrible instruction packet November 20, 2009
Jason R. Cavall (Getzville, New York)
2 out of 3 found this review helpful
Once I finally figured out how to use the computer and softwear I love it. The instructional packet really didn't walk you along the complicated (at first) functions of the unit. The wireless HR monitor does periodically drop a signal. The unit came with "rubber-bands" to secure the units to the bike which makes it nice to move from road bike to tri bike.
Sigma ROX 9.0 - as good as it gets July 15, 2009
Peter Spicka (NH, USA)
13 out of 14 found this review helpful
I have been using this computer for more than 3 months now and here are my observations.
PROS:
1) Overall a good value for the price paid , I think the combination of wireles monitoring of cadence,speed, HR and logging memory is unique in this price range. However, if you want a GPS capable computer then look elsewhere.
2) I like the customized view display and its layout, which is easy to read even during bumpy rides on unpaved roads.
2)The size of the computer is appropriate for its functionality and it is definitely smaller than corresponding Garmin 305 model.
3) I also like the fact that sensor batteries are standard types and can be changed by myself.
4) Accuracy of the computer is reasonable, I did not find more than 2% difference comparing the distance and elevation profiles registered by ROX with topological maps.
CONS:
1) I really don not understand why cadence is not part of logging memory. According to me, this is one of th top 3 parameters you want to monitor during a ride, together with speed and HR. It is quite ridiculous that Sigma is capable logging the air temperature but not the cadence. Was this designed for cyclists or meteorologists?
2) The sensor attachments are rather clumsy , which has been typical even for older Sigma models. Using o-ring combination with double-sticky foams is a cheap solution in this price range. Need to be frequently adjusted especially if you transport your bike in a car and take the bike wheels off.
3) This computer can be used only when attached to the bike base. Once you use it standalone, no HR can be recorded (elevation is the only variable monitored continuosly ) which makes it not usable for runners.
4) The elevation sensor is OK but since it is based on the air pressure (no GPS data calibration) it makes it very sensitive to the atmospheric pressure variation. I noticed that the elevation of my house registered by the computer varied by more than 20 m (60 ft) in a period of ~2 hours. So calibration before each ride is a must.
5) The uphill/donwhill grade measumeremnts are significantly time lagging and they show right values only if you remain at same slope at least for 15-20 s. It means that if you ride in a terrain with lots of short uphills and downhills, the computer will show +6% climb only after you passed the peak of the climb and are already on the downhill section.
Bottom line: It is a good cyclocomputer that reports all relevant variable that most people will need during rides. I find it usefull for improving my ride in terms of adjusting cadence and gear ratio to achieve optimum HR rate range and ability to log and compare my performance stats during short cycling season here in New England.
 Make a different purchase July 7, 2009
J. Carothers
3 out of 7 found this review helpful
This computer has many advanced features as anyone wanting one knows. But it fails in a basic measure of usability, and this problem isn't confined to this top-of-the-line model: reset on this puppy sucks.
It stays on for at least a week after the last ride (no auto-off), and I still haven't figured out the magic of how to reset it for another ride. WHen I go through the reset values queries, it then fails to register the new ride. It may reflect some data, but not all (including heart rate). I can't figure out why it suddenly starts to read new dat during a ride. And speaking of heart rate, it doesn't indicate when there is a failure to pick up a signal, it just stops changing the last data point. No pulsing heart vs. still heart icon - nothing.
In short, another brand is probably going to bring you greater satisfaction.
Showing reviews 1-5 of 9
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