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Description
ZW63 1.39 inch Round Screen Smart Watch, Heart Rate / Blood Pressure / Blood Sugar / Blood Oxygen / Body Temperature / MET Test1. Main functions: all weather heart rate, blood pressure, blood sugar, blood oxygen, body temperature, meiosis test, call, step count, sleep, calories, distance, voice assistant; music playback, stopwatch, countdown, calculator, weather display, female physiological cycle function, remote control photography, wrist raising screen; find mobile phone, call reminder (caller number name), message reminder, alarm reminder, sedentary reminder, heart rate
1. Main functions: all-weather heart rate, blood pressure, blood sugar, blood oxygen, body temperature, meiosis test, call, step count, sleep, calories, distance, voice assistant; music playback, stopwatch, countdown, calculator, weather display, female physiological cycle function, remote control photography, wrist-raising screen; find mobile phone, call reminder (caller number/name), message reminder, alarm reminder, sedentary reminder, heart rate function alarm reminder; Bluetooth disconnection reminder (need to be turned on on the APP end), game, flashlight, breathing training, language setting, time and date setting2. APP: Hband
3. Multiple dials: 5 default dials + 1 custom dial + 1 massive dial, 100+ sports modes
4. Main control chip: JL7013A + external 64M Flash
5. G-sencor: Silicon Creation ST8321
6. Heart rate sensor: Day Easy Core 3602
7. Vibration reminder: Motor vibration reminder
8. Encoder: Full code encoder
9. Waterproof level: IP67
10. Watch supported languages: Simplified Chinese, Japanese, English, German, French, Italian, Spanish, Portuguese, Russian
11. APP supported languages: English, Simplified Chinese, Traditional Chinese, Korean, German, Japanese, Russian, Spanish, Italian, French, Vietnamese, Portuguese, Persian, Polish, Turkish, Czech, Slovak Hungarian Arabic, etc. 150+ languages ??in the world
12. Screen size: 1.39 round screen, resolution: 360 x 360
13. Type: IPS screen
14. Bluetooth: Bluetooth 5.3
15. Operation mode: Full touch + 2 buttons + rotary button
16. Battery: Polymer lithium ion battery
17. Capacity: 3.8V/250Mah
18. Usage time: 2 days for heavy use, 9 days for light use, standby: 25 days, calls\music playback: 4 hours
19. Charging method: Magnetic charging
20. Charging time: Normal 2 hours
21. Strap material: Standard: Silicone strap
22. Watch size: 54.85x42.32x13.1mm
23. Recommended maximum size of protective mold: 45.61x37.16mm
24. Thickness: 13.1mm (including heart rate position)
25. Whole machine: 269*39.67mm (including strap)
26. Head weight: 34g, watch whole machine: 52g
Specification:
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Exchange/Return Notes
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4.2 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Very powerful, worth every penny!
Works awesome! Very powerful, and has adjustable power which is perfect when you don't want full speed.
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Reviewed in the United States on May 31, 2026
★★★★★ 4
Very good, low budget blower.
For the price, this blower is very good. I had a WORX blower and mulcher, previously, that worked well, but this blower does the one thing better. I do miss the mulcher, but not the extra weight. This stand-alone blower is about 3 pounds lighter and more powerful; though, the all-in-one had more precise airflow, for the few small spots that it was beneficial for me.
The build quality is so-so on this blower. It lacks what we all appreciate in our tools and devices—that sharp snap and click and clean fit when putting the pieces together. The hose attaches to the body with an imperfect and never fully flush connection. It's not going to go anywhere—it does have a latch. The pieces are not as rugged and solid as my previous WORX all-in-one, but I can guess that's what helps reduce the weight. Speaking of, I had considered the WORX WG547, cordless blower, for the weight reduction and convenience of no cord, but I was concerned with loss of power, limited usage time, and higher cost. After using this WG520 for the first time, I do desire a lighter machine, but I think I would miss the extra power and limitless usage time. If budget was not an issue, I probably would've gone with the WG546—which is a step up from the cordless WG547 I was considering—with an extra battery; but that is 3-4 times the cost of this WG520. But even that blower could not match the power of this one. It's worth noting that that power comes from a large air intake on the back that can suck in loose clothing.
Cost was the number one priority for me; so I was pleasantly surprised when I found that on this low-budget machine there are variable speeds, ranging between the low to high speeds. If cost is the number one priority for you as well, without having to lose too much power capability, I can easily recommend this WG520 WORX blower.
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Reviewed in the United States on October 22, 2023
★★★★★ 5
Buy this one, forget the rest
This is one of the most powerful handheld electric blowers available. If you're serious about getting the job done quickly, this is the baseline. The next power tier is a gas backpack blower at five times the cost, then an even more powerful backpack, and then four-digit specialty tools from companies like Billy Goat. I bought the Worx because I didn't want to spend three hours raking a half-acre of grass.
My trial run was an hour of continuous use with matted wet leaves and driveway sand. It fast became apparent that to be efficient, a blower has to move leaves without being on top of them. Blowing from six inches just makes everything scatter as piles build up. You end up crisscrossing the section you just cleared to deal with the strays. The further your breeze carries, the more direct the flight path of the leaves. This range, and the ability to scour stubborn leaves from the ground, comes from air speed (MPH). At the same time, though, you need a big enough wall of air to move more than one leaf at once. That comes from the size of your pipe opening. The two multiplied together determine your total air volume over a duration, or CFM (cubic feet per minute).
In physics-land (with spherical cows and turbulence-free pipes, spared from the icy hand of marketing), CFM is the best measure of a blower's work capacity. MPH, you can change by varying the size of the pipe; a smaller pipe makes a smaller column of air moving at a faster speed (and more impressive advertising), which is why a lot of consumer-class blowers have tiny nozzles. (I'm looking at you, Sun Joe SBJ601E.) But there's a cost to adding MPH: it kills efficiency. The energy to move a volume of air goes up with the square of speed, so if you design your blower for 160 MPH, you'll get half the CFM of a 110 MPH blower from the same power. Something to mull if the blower is powered by a battery.
Still, if you know either speed or CFM, and the size of the pipe, you can calculate the other (assuming the manufacturer isn't misleading you by quoting CFM at the fan and MPH at the end of the pipe). To get CFM from MPH and the radius of a round pipe, the calculation is (radius^2)*(mph)*(1.92). That's (1.69^2)(110)(1.92) for this blower's 110 MPH and 3 3/8" pipe, with the result arriving right at the rated number of 600 CFM.
Anyway, the Worx has enough volume and speed to blow mounds of wet leaves from six feet and dry ones from ten or more. It's impressively powerful. I was switching arms every few minutes as they wore out from the backward force. Only some really baked-on mud would have benefited from a pipe-reducer attachment. Thanks to ape-like proportions or the secure fit of my spandex leaf-blowing onesie, clothing suction from the rear-directed air intake hasn't been a bother.
ALTERNATIVES:
I almost bought Toro's highly-rated "Ultra" combination blower to minimize bagging, but the vacuum functionality didn't seem that useful in videos. Maybe it'd be adequate to clean an enclosed deck area or a small yard with a scattering of dry leaves. For a larger yard, it looks like a time sink relative to a standalone mulcher. Likewise the blowing capacity, which, at 410 CFM, trails the Worx by quite a lot.
Cordless tools were also tempting. There's a 20V DeWalt people seem to like that's rated at (a perhaps optimistic) 400 CFM. Because it's a similar fan design to the Worx, we can compare power directly. DeWalt's standard battery is 20V (or so we'll stipulate; it's closer to 18V under load) and 5 amp-hours, so we're looking at 100 watt-hours total output. 15 minutes of runtime translates to a sustained draw, best case, of 400W. Assuming 90% efficiency in the brushless motor, that's 360W actually moving air. (When new. Expect a performance drop over time and battery replacements by year three.)
Compare this Worx: 12 amps at 120V equates to 1440 watts sustained, in this case feeding a 2-pole AC/DC motor that's perhaps 55% efficient. 12A is close to the maximum a device can reasonably expect from a typical 15A household socket. Even with nearly half of our power lost to heat and noise, the remaining 790W is over double what the DeWalt can manage. It's no coincidence that 600 CFM cordless blowers (Greenworks and Kobalt come to mind) have 80V/2.5Ah batteries with twice the DeWalt's capacity. Their runtime at full tilt? The same fifteen minutes, with three extra pounds to lug around from a chunk of lithium that costs more than the blower it attaches to.
And what of gas blowers? The handheld versions have around 1 HP with CFM from 450 to 500. They're usually tuned for higher MPH than the Worx, so they're likely to be a little better with wet leaves and a little worse with dry ones. Backpack blowers up the displacement and make between 1.5 and 5 horsepower. The models that you might find on the back of a professional landscaper can manage nearly 1000 CFM with speeds around 200 MPH. That's a considerable difference, but you pay for it at the checkout and in weight: figure 10 pounds or so for a handheld (relative to 7ish for this unit, plus some cord) and 20 or more for a backpack.
As of mid-2020, two other corded blowers are worth a hard look: Toro's F700 and Worx's WG521. The Toro arrived first in 2019 with a hefty 720 CFM rating, a bigger two-arm handle, and a better cord retention mechanism. The WG521 is the response: 800 CFM and 135 MPH (claimed) from a ~4" nozzle, albeit still intended for one arm. All three blowers are beastly and often close in price; pick whichever best channels your inner Tim Allen.
ACCESSORIES:
A motor this powerful benefits from a thick (low gauge) cord for longer runs. You lose a bit of performance with thinner cord. The generic orange 50-foot extension everyone has is 16-gauge. Feeding a 12A load for 50 feet, it'll have a voltage drop of about 5V. Heavier 14-gauge loses 2.5V on the same run, and industrial 12-gauge, only 1.5V. The scale is linear, so if you double up that 16-gauge cord for a 100-foot run, you'll lop off 10V.
How's that play out here? From a short and fat cable (that the cheesy plastic strain-relief piece won't actually accommodate; just tie an overhand knot over the two plugs instead), we'd expect a 1440W draw (12A * 120V, or a bit less because the house wiring itself has some drop). Losing 5V drops the total to 1380W. That's about what I found when I tested the Worx with a watt meter.
12ag / 3 ft = 1423W
14ag / 100 ft = 1352W
16ag / 50 ft = 1351W
16ag / 50 ft + 14ag / 100 ft = 1280W
With the progressive thumb dial at the lowest setting, minimum draw was 260W.
For shorter runs, disconnect extensions you don't actively need. Every cable sheds a percentage of the energy it carries to heat. As above, skinny cables lose more. Coiled on the ground and coupled with a high-load device like the Worx, they can build up enough heat to start melting insulation, which tends to cause sheepish expressions and insurance claims.
This blower is also loud enough to merit hearing protection. On an A-weighted scale (approximating human hearing), measured outdoors from three feet, it makes 82 dB on low and 91 dB on high. Indoors or near a wall, volume jumps by 10 dB and subjectively doubles. While the sound character emulates a vacuum, my Shark only measures 72 dB indoors; you'd have to run over a rat's nest of lamp cords to make one this loud. Amazon has a number of comfortable muffs for less than a Jackson that'll keep your ears intact.
You can find electric blowers with more toys, but few that'll get the job done as fast as this one. It's a bargain at the asking price. I'll update if I catch any reliability problems.
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Reviewed in the United States on December 1, 2016
★★★★★ 5
Light, and easy to use for blowing leaves
I bought this in the fall of 2025, and found it very easy to use. I also have a Toro blower/vac, that I use to grind up leaves in the fall.
While this appliance is only good for blowing leaves, it does a good job of it. It's quieter than the Toro, and considerably lighter in weight. I find it much less fatiguing on the hand than the Toro.
It has multiple speeds, so is versatile. You don't ALWAYS want maximum wind from these things, depending on the job and the space.
The weight, comfortable handle, balance, and lower noise are the top advantages to this machine.
Because this is a corded model, there's no concern over battery life. You can blow the afternoon away without a care.
Only time will tell when it comes to durability. 🤞🏻
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Reviewed in the United States on January 13, 2026
★★★★★ 5
Great Power for the Price
Really impressed with this blower. It’s lightweight, easy to handle, and has plenty of power to clear grass and leaves quickly. Perfect for quick yard cleanups. Definitely worth.
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Reviewed in the United States on April 18, 2026