Highly Accurate - 98 to 99% - Yamax Power Walker EX-510
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- Highly Accurate - 98 to 99%
- Japanese design - Works in any position
- Features include: steps, distance, stride, calories and fat burned, 30 day memory, and clock
- 1 Year battery life
- 1 Year warranty
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3D Accelerometer Sensor filter In order to recognize actual walking activity, 3D sensor has 11 steps filter.If you move less than 11 steps and take about 5 seconds no-motion break, previous 11 or less steps will not be counted. This device can store up to 30 days of memory data and 30 weeks of accumulated weekly data. Each of number of steps, calorie, fat burn, distance walked and activity time are stored in memory at 2:00 am after midnight every day. Accumulated Week Data will be stored from Monday to Sunday up to 30 weeks.
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Returned it to WalMart and ordered this one from Amazon.
Three trials of 1,000 steps yielded 1,000 / 998 / 1001. Pretty good and maybe I miscounted in my control count.
Lots of other features that make it well worth the price.
Without a clip, I've been carrying it in the front pocket of my jeans and it is off by 10% - 100 steps shows as 110 steps, 200 steps shows 220 steps, 500 steps shows 550 steps every time. Pretty consistent, huh? Exactly 10% off; never 9% or 11% - exactly 10%. I lose count before I reach 1000 steps but I'd bet it would show 1100 steps. Odds are in my favor.
This is continuous walking on a level surface at a consistent pace with no rest stops.
It's highly rated in other online reviews and a #1 seller on several fitness-related sites, so maybe this is a bad unit. I'll fool around with it in different locations - hard to do without a clip - and if it's still that far off, I'll try a replacement before simply giving up.
I will update this if it improves or I find it's a single bad unit.
I was so impressed I decided to get a pedometer for my spouse. Naturally, I did not want her to have a cheap unit like mine so I did some checks and found that this Yamax device was highly regarded. Fine, I bought it. I like that I don't have to push a difficult button to reset, it actually resets automatically after midnight. However, the distance traveled shows up on the lower tiny display, which I find impossible to read without also having to take out my glasses, which is annoying during walks.
Unfortunately, the simple act of reaching in my pocket and pulling the Yamax to see how far I've gone causes the steps walked to mysteriously jump and jump and record lots of steps, when I'm actually stopped. Moving my hand back and forth causes tens of steps to occur. Once you know a particular distance you don't need your pedometer every time you go for a walk. However, I get bored on the same walks so I like to go on walks through different areas depending on where I happen to be. If I'm in town for the day I like to go for a long walk before I head home. I have a minimum distance I like to walk so I check to see if I've gone at least half of that distance to know if I should start to walk back. Each time the Yamax comes out lots of unwalked steps get tallied. If I simply move my hand, lots and lots of additional steps get added to the total, which shows up on the upper display. Plus, just leaving the Yamax in the car during my drive causes quite a few steps to be added depending on the distance. The Yamax can be reset when you arrive, but if you are tracking total steps during the day then your total will appear inaccurate. I never expected exacting accuracy, but these issues are annoying and I regret not having returned the Yamax and simply purchased another much cheaper New Balance unit. The New Balance unit doesn't seem to be affected in this manner.
Sure enough, my spouse has taken over the New Balance unit and I am stuck with the Yamax.
I like the RESET to ZERO function. Here are my personal observations.
The EX-510 is much more accurate when hung on a necklace than it is when kept in a pants pocket. Contrary to how the directions say to calibrate the pedometer this is what I did. I counted my steps as I walked for 100 steps. Then I looked at the EX-510 step count. If it was higher than 100, I increased the stride length setting. Then took another 100 step walk. If the pedometer counts lower than 100 then lower the stride length setting. Repeat the 100 step walk adjusting the stride length setting until you get it close to 100. Reality is nothing is perfect. Your stride is probably not exact each time you step especially if you change speeds frequently.
I'm still running tests each day but so far the step count for a 2 mile walk seems off at 4,250. That would be close to a real stride length of 2.5 which might be right but I have the pedometer set currently set to 3.5. Secondly, the distance indicator is way off. It is no where near accurate for a 2 mile walk. These measurements were taken while walking on flat ground with the pedometer hanging on a necklace directly over my chest. I will continue to experiment with this questionable device.
Now for those who could care less about step accuracy. You can use plain math and no pedometer to get to say 7,000 to 10,000 steps per day. This is me: I'm 6 feet tall. I walk at a pace of about 20 minute miles. 4 miles per day equals 80 minutes of walking. The average stride length is between 2 and 3 feet. So 21,120 feet (4 miles) divided by 2 or 3 ft. stride gets you in a range of 7,040 to 10,560 steps. I might raise my star rating in the future but for now I'm disappointed especially how they brag about its accuracy.
Some people like to wear their pedometer all day. If you do that I doubt any pedometer is smart enough to give you an accurate step count. If you don't believe me, then see how many steps your pedometer counts when you drive your car! My friend has a FitBit. She is also frustrated with its inaccurate distance and step count measurements. I guess the name is 'fitting'. You'll have a fit when you use it. I really hope I can come back to this review in a week or so and eat crow but when it comes to distance measurement being off - come on! I tested the distance with a car and a GPS device. They were both dead on. Not these gadgets.