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Planet Bike Protege 9.0 Wireless Bike Computer

    Planet Bike Protege 9.0 Wireless Bike Computer

    The Planet Bike Protege 9.0 wireless bike computer is all you need to keep track of your car-free miles during commutes, training rides and touring trips.

    • $55.00

    Item # 786491

    REI Members get back an estimated $ 5.50 on this item as part of their annual member refund.

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    • Digital wireless technology eliminates messy wires
    • 4-line MacroMonitor™ LCD displays up to 5 pieces of data at a glance
    • 9 functions include speed comparator, speed, average speed, maximum speed, ride time, distance, clock, dual odometer and temperature
    • Fits 25.0-31.8mm handlebars
    • Magnet fits up to 4mm bladed spokes


    Item 786491

    REI Membership

    Planet Bike Protege 9.0 Wireless Bike Computer Specs
    Best use
    3V CR2032
    GPS tracking
    Heart rate display
    Current speed
    Maximum speed
    Average speed
    Speed comparator
    Trip distance
    Auto start/stop
    Countdown timer
    Lap timer
    Dual bike memory
    Exercise log

    Planet Bike Protege 9.0 Wireless Bike Computer

    Loading Ratings & Reviews...

    Rated 3.1702/5 based on 47 reviews
    Rated 1out of5
    by fromCompletely worthless The radio range is less than 24 inches even with new batteries, making this unreliable or non-functional in most situations. The instructions are among the worst I have ever seen and their website adds nothing. A (not so) cheap piece of junk and should be bought only if you enjoy wasting hours on poor quality and design.
    Date published: 2009-07-25
    Rated 1out of5
    by fromNice Idea, poor result I bought a wireless computer thinking this would make installation a breeze. Well, it was not, thanks to a) poor instructions, and b) the first transmitter I got was not working properly. [...]Then I discovered that it's not a reliable computer: it was frequently registering a max speed of 60 to 99 mph, it would jump from, say, 22 mph to 18 mph and back for no reason now and then. The computer is really hard to dismount. And on top of this, the screw that holds the sensor in place came loose and I lost it, this is a high maintenance device.It's a great idea, I like the big numbers and the thermometer, but it completely unreliable. I would give it two stars, but the first computer I got was useless.
    Date published: 2009-11-24
    Rated 1out of5
    by fromNot Accurate at all I bought these (bought two) largely due to the high ratings it received here, but my experience with it has been disappointing. First and foremost the readings gotta be accurate and this computer is not even close. On a century ride (103 actual miles), it registered only 93 miles. On other rides with specified mileage, it's been off by about 5% (over and under). I assume that this kind of misreading will also affect AVG speed and other calculations. The temperature reading is often off by more than 10 degrees. Lastly, the screen has developed a dark spot (on both) which makes it difficult to read the current speed.
    Date published: 2010-02-20
    Rated 1out of5
    by fromlow quality Nice display, but the wireless sensor failed after just more than a year. I also had random accumulation of milage during storage and heard reports that fluorescent light will trigger the sensor. The reading is also very inaccurate with my top speed of 99 miles on many trips. So, stay away, this unit is junk.
    Date published: 2010-03-12
    Rated 1out of5
    by fromDisappointing I'm a fan of Planet Bike, and this item is a disappointment. This unit has a great display, which is what probably attracts most people. However, the wheel motion sensing transmitter is very poorly engineered: 1. The sensor and magnet must be aligned at less than 2mm accuracy. 2. The battery compartment projects into the spoke sweep space, making the 2mm hard to achieve without the spokes striking the battery compartment. 3. The sensor mounting system has more than 2mm of wobble, which makes keeping the unit aligned difficult. I spent more than an hour trying to get this computer working and never did get a valid mph reading. I'm returning it.
    Date published: 2011-05-21
    Rated 1out of5
    by fromIt's a great unit, If it works After reading the other reviews, I thought I would take a gamble and purchase this unit. Assembly was easy enough, as was the calibration. But like many of the other reviewers, it was very easy to go 68 or 90 mph when I hit a bump. It seems like the sensor on the fork reads a vibration, as the magnet passing the sensor multiple times, therefore multiplying the actual speed by how much it moves with the vibration. The inherent problem lies in the flimsy nature of the sensor mount. I know this now because I returned it and bought the wired one, which works like a charm. The nice thing about this unit is the larger display, with many of the settings visible on one screen. If you like this setup, then don't waste your time and money on this one. Buy the wired one and you will be happy, even though it's ugly and white.
    Date published: 2011-05-26
    Rated 1out of5
    by fromcaution Bought this unit in the spring 2011 and put it on a new bike. Worked great, seemed accurate. Then without any incidents/crashes, it simply stopped working. Checked and replaced the battery - still nothing. Returned it to REI.
    Date published: 2012-01-15
    Rated 1out of5
    by fromDoesn't work properly.. I bought this computer because I liked the simplicity and large display. Unfortunately, the computer can't recieve the information from the sensor unless it's within a foot from it, and the sensor is as close from rubbing aganist the magnet as it possibly can be. Also, the mounting for the sensor is just two zip ties, and with normal use these don't hold up the sensor for very long, in which case the whole thing ends up getting smacked by my spokes and flies off from my bike. Seems like a probably got a bad egg as far as the readout is concerned, but the mounting for the sensor is just a really bad design in my opinion.
    Date published: 2012-04-02

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