*UPDATED* This review was from when this watch first came out and before any other Garmin triathlon focused watches came out. I'm made some recent updates to the review in hopes that it will help others to make a good decision.
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This device has been represented as a triathlete's watch and the first swim proof GPS watch. If you watch the video from Garmin or see any of the advertisements, Garmin leads you to believe that this watch will collect reliable data for all 3 multisport events. It is reasonable for someone to assume this watch can be worn in a race and collect GPS data in the water, since, of course, swimming is the first event in a triathlon.
If you are considering buying this watch, hopefully the following information will help you:
-This device does not collect usable data in the water (other than time, which any $20 waterproof watch can collect in a much smaller form factor). No heart rate data and totally unusable and inaccurate GPS data will be collected while in the water.
-There are preset modes for "run," "bike," and "other," in which "other" shows a person on skis (explain that one?). They intentionally omit a category for swimming, despite advertising that this watch is for triathletes and show people coming out of the water in transition (see the photo I added under product photos).
-You will need to purchase a separate quick release kit if you want to use this watch on a bike. For some reason, it does not get accurate data on a bike if you are wearing in on your wrist. It auto pauses, then unpauses for most of the time I am riding if I wear it on my wrist -- even if I have it set to only auto pause when completely stopped. The quick release kit is not the more common one for the 205 and 305, so do not buy that one. [UPDATE: They made a new quick release kit specifically for this watch, then they updated it again. The current [updated] quick release kit that you want to buy is
Garmin 310XT QR Kit (updated)]
-If you want foot cadence or the ability to track distance indoors, you will want to buy a foot pod. Older, less expensive Garmin models included them in their kits, but it looks like they no longer do that. Either the current
Garmin Foot Pod [Retail Packaging] or the older
Garmin Foot Pod for Forerunner 305, 405, and 50 will work. I had the older one and it broke after about a year of use (I never ran in the rain or got it wet), so I'll be buying the newer, smaller one to replace it.
-The watch is large and sits high on top of the wrist (they packed 20 hours of battery life into this watch), so to wear it under your wetsuit will let water in the wetsuit, or you will have to wear it on top of (or crammed in front of) the wetsuit, which will not allow you to remove your wetsuit without first removing the watch (thus adding time and/or complication to your transition, and sort of negating that whole "triathlete" angle). You can see a photo of this watch on my wrist under the photos section of the product to hopefully give you a better idea of what it will look like on you (I'm a 6' 195 lb male with big bones).
-There is no way to turn off GPS tracking for only one of the 3 events in multisport mode. Therefore you will always either have incorrect GPS data recording for the swimming mode (or, actually "other", since there is no "swim" mode, as previously mentioned). I have called customer support and they confirm this. Their solution was to turn off GPS while I am swimming, then reset and manually start a new timer and mode during transition 1 for my bike event. I'll let you be the judge of how to take that advice.
So, in conclusion, if you want to setup this watch for a bike and run, and want the ability to wear the watch in the water before hand (and not start it unless you want some incorrect distance data included), you will need to buy:
(pricing as of 9/8/2012)
~$250 - the Garmin 310XT with HR
~$16 - Quick release kit (for wrist and bike)
Garmin 310XT QR Kit (updated)~$45 - Foot pod (if you want cadence)
Garmin Foot Pod [Retail Packaging]
~$38 - speed/cadence sensor (if you want cadence for the bike)
Garmin GSC 10 Speed/Cadence Bike SensorYou'll be into it for $349 (as of 9/8/2012) [UPDATE: When I purchased all of those parts, it was $575. Current pricing is much more reasonable]
I feel that Garmin did the consumer wrong on this model with the false advertising (in 2009) and high cost of itemized accessories. Some of us are willing to spend that kind of money on a product if it proves to do what it advertises itself to do. We're not asking it to do anything more than perform as advertised. I realize the fine print saves Garmin from lawsuits, but it doesn't gain them repeat customers. It sends them over to Polar.
[EDIT: I have edited the title of this review to what it currently reads from "Misleading: Not a Triathlete's Watch," because it seems that Garmin has softened their advertising and marketing surrounding this watch. I purchased this watch when it first came out in 2009, and at the time the marketing videos and advertising in triathlon magazines mentioned nothing about the fact that it doesn't track GPS data in the water, and in fact seemed to lead the consumer into believing that it does. That advertising has since softened and is now replaced by a newer model
Garmin Forerunner 910XT GPS-Enabled Sport Watch]. I would look at that newer model and compare it to this one to decide which model you would prefer.