CATEYE Wired Bike Computer – Entry-Level Speedometer and Odometer, Perfect for Beginner Cyclists, Auto Start/Stop, Easy Setup for Road, MTB, Gravel Bikes, 3 Year Battery Life

Easy to install and set up (tire circumference is important so be sure to follow instructions), it doesn't have a lot of the extra things that I don't need or want. The carbon and calories measurements don't really matter to me because there are a lot of variables that can impact them. It's easy to see what is on the screen and switching modes is very simple. It is accurate, I used GPS to check the speed and distance. It appears to be sturdy enough and the wire is solidly in place. I was a little disappointed by how thin the wires are compared to the device it was replacing. This is perfect if all you want are the basics.

Great bike accessory. It took about 15 minutes to install and works great! I needed to use a few extra plastic ties to secure the cable. They provided enough for the install but I wanted to secure it away from other cables so I used a few ties I had lying around. I only use it for speed and odometer but it has a lot more functions that may help you in your rides. I would recommend this to anyone wanting an inexpensive bike speedometer/odometer.

This unit is being used in an urban area as a trip meter and speedometer. The product itself is fine for the price and delivery was good as well. The meter is small and easy to use in operation on a bike. The set-up is a bit contorted because the printed instructions were unclear; the instructions on the Cateye site were different from those that came with the meter. The Internet instructions answered questions that were not covered in the package. The mounting using cable ties is a bit hokey, and I'd rather have a better system. The bracket could be better for releasing the electronics package from the mounting bracket. The accuracy of the measurements depend upon how well the circumference of the wheel is determined based on the size of the wheel. This system is dependent upon the accuracy of the data put into the device and has inherent error and variability, which is NOT a fault of the machinery, but the associated information from the bike. I also would prefer the unit to be shipped inoperative with a new battery that would be activated by the user--it comes with a low-cost battery installed, and I do not look forward to having to reset the input data when the battery weakens. While this review is critical of some minor flaws in this system, overall this is a very nice product for a fair price, and provides a range of information that is helpful for casual bikers. Mike Florida

I've owned CatEye bike computers through many decades of road biking and this is one of the best and lowest-priced models I've owned. It doesn't do cadence, alas, but the other readings are all that I need and are displayed in clearly legible numbers. Setup is easy-ish and the unit has now been exposed to +2,100 mi. of riding -- incl. serious rain & blazing sun -- and the unit keeps going along looking fresh as when I bought it. Highly recommended as a v. good basic bike computer.

The instructions are okay but they leave out some steps. The magnet and sensor must be installed on the right side of the bike. The wire between the sensor and the display base is not long enough to mount the sensor on the rear wheel. The magnet mounts on a wheel spoke and the sensor mounts on a fork. As you go radially inward from the outside of the wheel to the hub, the distance between the wheel spokes and the fork decreases, so you have to find the "sweet spot" where the distance between the magnet and the sensor is 5 mm (3/16 inch) or slightly less. The wire ties that come with the speedometer/odometer are light duty (0.10 inch wide). They must be used to mount the display base because larger wire ties will not fit through the slots in the display base. But for all other wire ties, I recommend heavier duty (0.19 inch wide) wire ties to make the installation stronger. Use sunlight resistant (black) wire ties. Use plenty of wire ties but make sure you leave slack in the wire in the right places to allow the wheel to turn all the way to the left and right without pulling the wire taut. I set my speedometer/odometer for 26 inch to match my 26 inch bike. I checked the accuracy between mile markers on the bike path I use and the calibration was perfect. When you start riding, the speedometer/odometer turns on automatically. However, it doesn't seem to turn off completely (after a time period of non-use, half of the display goes blank). I cannot find a way to turn it off completely, to conserve the battery. The battery is supposed to last 3 years - time will tell if that is true. Overall, I am very pleased. This speedometer/odometer does everything I wanted, and so far it is working very well.

This is a really nice bike computer. It is a basic bike computer with a nice detection wand that works really well. I will start by pointing out that I only use this on my trainer (I use GPS and an iPhone on the road). Since I use this only on the trainer, I do not keep it on the bike (take it off when I take the bike out of the trainer). I got this solely for the trainer, so I could see speed and distance and got this unit since it was cheap (price wise) and is easy to read). The unit is much smaller than I expected (from the photo), it is on par (size wise) with other bike computers (like the cheap ones with the Schwinn name). Although it is small, it has a very high contrast screen making it super easy to read and the large numbers make this a quick glance item. Installation is easy, you have the wand that goes on the frame (wherever you can put it for your use [usually the front frame]). You just put the magnet on a spoke where it will pass the sensor. I am installing this on the rear wheel (since I use it for a trainer). The wand can be mounted using zip ties, I did notice that it has a sticky pad on the bottom (I would not stick this to my frame...). However, zip ties are easy and safe on the frame. You than run the cable (keep it away from the drive and feet area) to wherever you have the computer (if you have this on the handlebars you would just run it up the fork and tie it down, but make sure you still have wiggle room [do not taught it up where the frame and fork meet] for turning the handlebars). I have this on my trainer (so I can look down and see the distance/speed), it will not reach from the rear wheel to the handlebars, fine with me; but FYI. My only complaint with this product is the setup! It is crazy hard (it is not a good sign when the manual is half the size of the packaging) to setup (not install, but actually setup the unit for use). The instructions are lacking and the one manual (with the graphical flow chart) requires you to know information from the other manual... You have to reset the unit using the back button, than the front button is used to increase or go through items, and you have to use the set button on the back (did not realize this at first). When you go through it you will want to put in the basic information (preferences) and read the instructions on how to set the time and input the manual circumference (I would not use the generic choices, use the chart and manually enter your exact size for your wheel; otherwise your speed and distance will not be right). Entering the time and circumference was tough since it no longer used set for moving to the next and introduced holding down the main button). This unit looks great and is easy to use and operate once setup, but the setup of the unit is a design nightmare! The unit offers numerous information. The speed on the display is the main feature and I just keep the button in Distance mode. The unit has other modes, but most likely distance is the main thing. The Odometer is nice, but I let Strava keep track of that for me (I manually enter the numbers from this unit into Strava after exercising so it keeps track of the milage on bike [I use this for just general info and maintenance intervals]). You can browse through information screens by pressing the center button and you can reset the workout by holding down the center button (this does not reset the ODO). After 10 minutes of the sensor not detecting the magnet it will go to 'sleep' and just display the time. I do not not see the point of this, since this seems like it would waste the battery, and if I am not moving I am not on the bike and do not need to know the time. It is hard to say how the battery is, since I have not had this that long. However, I just think it would go further without keeping the display on for the time. In the end this is a great bike computer. It has a large display with easy to read numbers and is easy to install (not so easy to setup, but once you do it, you are good; until the battery dies). The unit detects the magnet with no problem and I have not had any issue. It is very nice looking and works perfectly. I am very happy with this unit and highly recommend it for a bike computer!

I've used CatEye biking computers for years on several different bikes, so I was familiar with the basic setup. But for the Velo 9 I found the mostly illustrated instructions confusing, because I wanted to specify the exact circumference of my tires to get accurate distance readings. And I didn't care to measure this manually. I might have chosen 700c but looking carefully I saw that this could give (an unspecified) difference from my own tire circumference. The solution was to choose the 205 option (which is a choice for circumference) and then increment this number the the one indicated in the table of various sizes. So following the illustrations I incremented the number (first units, then tens) to the size indicated in the table for 700-38c tires, which is 218. Pressing and holding the mode button completed the choice for size. From there everything was familiar except my installation which was different from typical, in which the magnet and sensor are mounted on a front wheel. I am using the Velo 9 on a bicycle attached to a trainer so I wanted to measure revolutions of the rear wheel. The wire from the sensor to the display is too short to reach the handlebars, but luckily my bike, a Schwinn CrissCross, has a step-through top tube that is lower than the typical male bike and the wire does reach from the rear to near the front of the top tube. One question I had about choosing the CatEye Velo 9 was what is the difference between Velo 7 and Velo 9? The answer was on the second page of the setup instructions - Velo 9 is identical except that it can calculate Calories and Carbon Offset (CO2). If I had known this I would have opted for the slightly cheaper Velo 7. I had not seen a list of differences anywhere else. I am pleased with my setup and with the displays of the Velo 9. It works well for me.

I have three Cat Eye Velo 2 models from 1993 that all still function as new so I have a lot of faith in the Cat Eye Velo wired models. They do not have unnecessary information that is totally impossible to have any accuracy meaning on any model regardless of costs. They give the information I want and nothing more. Having less functions means easier to setup and setup again when the battery dies. I am sticking to the simplest wired model for a few reasons. First off there is only one battery to replace and being wired it should last well over three years before you have to change it and reset everything again. Expect less than a third of that battery life with a wireless unit. I find it hilarious that people actually buy models thinking they are getting such features as "Fat Burned" or Calories Burned" It's technologically impossible for anything other than an expensive stationary bike to give any accuracy for either of these functions. The following must be figured into the equation for anything close to accurate readings on calories or fat burned. Are you on a heavy clunker bike or a light high performance bike? The device can't tell. Are you on flat ground or working hard to go up hills or just coasting downhill? The device can't tell. Are you riding with a head wind or tail wind and at what wind speed? The device can't tell. NONE can be taken into account by the bike computer regardless of price. These are just a few things that come to mind and hopefully if you have normal brain function you will realize any bike computer that claims to give calories burned or fat burned information can't possibly have the slightest degree of accuracy. In short, NONE can do it yet many claim to have these features at an increased price. I am sure the manufacturers realize gathering such data by only counting the number of wheel revolutions per second or minute is not possible but advertise the features as a sales pitch only. Don't fall for it. It's simply not possible and all you will really get for the extra money is worthless incorrect readings, shorter battery life and an overly complicated unit at a higher price. If all you want is current speed, average speed, distance per trip, total distance and a clock this is the ONLY one you need. You may think wireless is a bit easier to install and to some degree it is but it is also more prone to give inaccurate readings and the sensor to magnet distance is very crucial for any kind of accuracy on a wireless unit. The distance you can have the sensor from the spoke magnet and still get accurate readings is a full double the range of a wireless unit. I'd rather spend a few more minutes running and tying off the wire than have inaccuracy, poor battery life and two batteries to replace. This is simply one such item where "less is more" and from my experience with earlier models, you can expect this model to outlive your bike. I already made the mistake of trying another brand. It's not a mistake I will make again.