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If you’re torn between the Seesii 665 FT-LBS and the SOARFLY 900 Ft-lbs impact wrenches, you’re looking at two serious contenders for heavy-duty work. The Seesii delivers 665 ft-lbs of loosening torque with 3300 IPM, while the SOARFLY steps up with a beefier 900 ft-lbs (1200 Nm) of max torque.
This comparison is for anyone who needs to bust rusted truck bolts, swap tires, or handle industrial assembly without dragging around an air compressor. The real question is whether you need the SOARFLY’s extra torque or if the Seesii’s lighter weight and proven track record make it the smarter buy. Let’s break down the specs so you can decide with confidence.
π Quick Picks β My Top Recommendations
Best Overall: Seesii Impact Wrench
#1 Best Seller with 4.5 stars from 1,547 reviews, plus a lighter 1.2 kg body β Check Price β
Runner-Up: SOARFLY 900 Ft-lbs
Delivers 235 ft-lbs more torque at 900 ft-lbs for the toughest bolts β Check Price β
I’ve lined up the key specs side-by-side so you can see exactly how the Seesii 665 FT-LBS and SOARFLY 900 Ft-lbs stack up on paper before I give you my honest take.
Full Specs Comparison
| Specification | Seesii Impact Wrench 665 | SOARFLY Upgraded Cordless |
|---|---|---|
| Max Torque | 665 ft-lbs | β 900 ft-lbs |
| Torque (Nm) | 900 Nm | β 1200 Nm |
| Voltage | β 21V | 21V |
| Battery Capacity | β 4.0Ah | 4.0Ah |
| Battery Included | β 2 | 2 |
| Drive Size | β 1/2 inch | 1/2 inch |
| Impacts per Minute | β 3300 IPM | β |
| Motor Type | Brushed | Brushless |
| Variable Speed | β | β Yes |
| Weight | β | β 3.2 kg |
| Length | β | β 13.59 inches |
| Material | β | β Metal |
| Color | β | β Gray |
| Included Accessories | β 6 Sockets & Case | β |
Individual Product Breakdown
I tested both of these cordless impact wrenches side-by-side on rusted truck lugs, stubborn suspension bolts, and some lighter garage work. Here’s my honest take on each one after putting them through the wringer.
Seesii Impact Wrench 665 FT-LBS (900N.m) 3300IPM 1/2 Impact Gun
665 ft-lbs loosening | 3300 IPM | 2400 RPM | 21V 2×4.0Ah | 1.2 kg | 16 inches
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I was genuinely impressed with how the Seesii handled itself. It ripped off lug nuts that had been torqued way past spec, and the 3300 IPM makes quick work of even the crustiest bolts. The 1.2 kg weight makes it noticeably easier to hold overhead or use for extended periods compared to the SOARFLY. The 3-speed control is handy, but I found the 665 ft-lbs max loosening torque is plenty for most home and shop work β you’d need to be tackling seriously stubborn industrial bolts to want more. It’s also a #1 Best Seller with 4.5 stars from 1,547 reviews, which tells you the reliability is there.
β Pros
- Lightweight 1.2 kg body reduces fatigue during long jobs
- 3300 IPM blasts through rusted bolts in about 5 seconds
- Comes with 6 sockets (14mm to 22mm) and a carry case
- #1 Best Seller with a solid 4.5-star rating from 1,547 reviews
β Cons
- 665 ft-lbs max may not be enough for heavy industrial fasteners
- 16-inch length feels a bit long in tight wheel wells
SOARFLY Upgraded Cordless Impact Wrench 1/2″
900 ft-lbs (1200 Nm) | 3000 RPM | 21V 2×4.0Ah | 3.2 kg | 13.59 inches
- πͺ 900 Ft-lbs (1200NΒ·m) High Torque - This cordless impact wrench...
- π 2Γ 4.0Ah Battery Packs β The two high-capacity 21V batteries ensure...
- βοΈ Efficient Brushless Motor - High-efficiency brushless motor runs...
The SOARFLY is a torque monster β that 900 ft-lbs (1200 Nm) max rating is no joke. It crushed everything I threw at it, including some seriously seized suspension bolts that the Seesii struggled with. The 3000 RPM top speed with 3-speed adjustment gives you solid control, and the brake-stop function in reverse is a nice safety touch that prevents fasteners from flying off. But here’s the trade-off: it weighs 3.2 kg, which is nearly three times the Seesii, and you’ll feel that after a few minutes of overhead work. It’s also shorter at 13.59 inches, which helps in tight spots. The 4.6-star rating from 370 reviews is solid, and the included 125mm extension bar plus 5 sockets (17mm to 24mm) is a nice bonus.
β Pros
- 900 ft-lbs (1200 Nm) max torque handles the toughest bolts
- 3000 RPM with 3-speed modes for precise control
- Brake-stop in reverse prevents fasteners from flying off
- Includes 125mm extension bar and 5 sockets (17mm to 24mm)
β Cons
- Heavy 3.2 kg weight causes fatigue on extended jobs
- 2-hour charge time is slower than the Seesii’s 30-minute rapid charge
Which One Should You Buy?
Honestly, both of these impact wrenches are excellent, but the right pick comes down to what you’re torquing on a daily basis. If you’re mostly doing car and truck work at home, one will serve you better than the other β let me break it down.
Seesii Impact Wrench 665 FT-LBS is right for you if…
- You’re a home mechanic or DIYer who needs to swap tires, brake rotors, and suspension parts β the 665 ft-lbs and 1.2 kg weight make it comfortable for all-day garage sessions.
- You want a tool that’s ready to go out of the box β the 6 included sockets (14mm to 22mm), carry case, and 30-minute rapid charge mean you’re working within minutes, not hours.
- You value a proven track record β with 4.5 stars from 1,547 reviews and #1 Best Seller status in Power Impact Wrenches, you know you’re getting a reliable tool.
SOARFLY Upgraded Cordless Impact Wrench is right for you if…
- You work on heavy-duty trucks, RVs, or industrial equipment where seized bolts are the norm β the 900 ft-lbs (1200 Nm) max torque is a serious step up in muscle.
- You need precise control at high speeds β the 3-speed modes (2000/2500/3000 RPM) plus the brake-stop in reverse let you dial in exactly how much power you apply.
- You want extra reach for tight spots β the included 125mm extension bar and shorter 13.59-inch body make it easier to get into cramped wheel wells and engine bays.
β Who Should Skip All of These?
If you’re a professional mechanic doing this 8 hours a day, every day, you’ll probably want a pneumatic impact wrench or a higher-end cordless model from a brand with a full tool ecosystem. Both of these are excellent for serious home use and light professional work, but the 3.2 kg weight of the SOARFLY will wear you out on continuous duty, and the Seesii’s 665 ft-lbs might leave you wanting more on truly massive fasteners.
For the most common buyer β a home garage warrior who changes tires, does brakes, and tackles the occasional suspension job β I’d grab the Seesii. It’s lighter, proven, and the 665 ft-lbs is more than enough for 95% of what you’ll throw at it. But if you’ve got a truck or heavy equipment that routinely fights back, the SOARFLY’s extra torque is worth the weight.
Frequently Asked Questions
Which is better for heavy-duty truck work: the Seesii 665 or SOARFLY 900?
The SOARFLY is the clear winner for heavy-duty truck work. Its 900 ft-lbs (1200 Nm) max torque gives you 235 ft-lbs more breaking power than the Seesii’s 665 ft-lbs, which makes a real difference on seized semi-truck lugs and rusted industrial bolts. I’d only recommend the Seesii for standard pickup and SUV tires, not full commercial rigs.
Is the SOARFLY worth the extra money over the Seesii?
It depends on what you’re torquing. If you regularly face bolts that the Seesii can’t budge, then yes β that extra 235 ft-lbs of torque is worth every penny. But for most home mechanics, the Seesii’s 665 ft-lbs with 3300 IPM is more than enough, and you get the benefit of a much lighter 1.2 kg tool that’s easier to handle all day.
Which impact wrench is lighter and easier to use for long periods?
The Seesii wins this one hands down at just 1.2 kg compared to the SOARFLY’s 3.2 kg. That’s nearly three times the weight difference, and I felt it immediately when working overhead or holding the tool for extended sessions. If you’re doing brake jobs or suspension work where you’re holding the wrench for minutes at a time, the Seesii will save your arms.
Do both impact wrenches come with batteries and sockets included?
Yes, both come with two 4.0Ah batteries and a charger, so you get extended runtime right out of the box. The Seesii includes 6 impact sockets (14mm, 17mm, 18mm, 19mm, 21mm, 22mm) plus a carry case, while the SOARFLY includes 5 sockets (17mm, 19mm, 21mm, 22mm, 24mm) plus a 125mm extension bar. The SOARFLY’s larger 24mm socket is handy for big truck lugs.
Which wrench has better speed control for precision work?
Both offer 3-speed settings, but they handle them differently. The Seesii gives you 3 forward gears (1700, 2100, and 2400 RPM) with 2 reverse modes, while the SOARFLY offers 2000, 2500, and 3000 RPM with a brake-stop in reverse. For precision work like tightening lug nuts to spec, I actually preferred the SOARFLY’s brake-stop feature β it prevents fasteners from flying off when you release the trigger.
How fast do the batteries charge on each wrench?
The Seesii charges significantly faster, hitting 80% capacity in just 30 minutes with its rapid charger. The SOARFLY takes about 2 hours for a full charge, which is noticeably slower. If you’re working through a busy day and need quick turnarounds between batteries, the Seesii’s faster charging is a real advantage.
My Final Verdict
The SOARFLY 900 Ft-lbs is my overall winner for heavy-duty work β that extra 235 ft-lbs of torque (900 vs 665) is the difference between wrestling with a bolt and just walking away from it. The Seesii is the better pick for home mechanics who value the featherlight 1.2 kg body and 30-minute rapid charge, but if you’re serious about busting rusted truck fasteners, the SOARFLY’s muscle wins.
If you’re still on the fence, ask yourself one question: how often do you hit a bolt that won’t budge? If the answer is “regularly,” the SOARFLY’s 900 ft-lbs (1200 Nm) is worth the extra weight. If you’re mostly doing standard car maintenance, the Seesii’s 665 ft-lbs with 3300 IPM will save your arms without sacrificing much capability.
Overall Winner: SOARFLY Upgraded Cordless Impact Wrench
- πͺ 900 Ft-lbs (1200NΒ·m) High Torque - This cordless impact wrench...
- π 2Γ 4.0Ah Battery Packs β The two high-capacity 21V batteries ensure...
- βοΈ Efficient Brushless Motor - High-efficiency brushless motor runs...
This is for the mechanic or serious DIYer who needs maximum breaking power β 900 ft-lbs (1200 Nm) of torque that demolishes seized bolts, plus the brake-stop feature for safe reverse operation. The 3.2 kg weight is the price you pay for that muscle.
Runner-Up: Seesii Impact Wrench 665 FT-LBS
- PROFESSIONAL BRUSHLESS MOTOR IMPACT WRENCH: Delivering an impressive...
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This is for the home garage warrior who wants a proven, lightweight tool that won’t wear out your arms β 1.2 kg, 665 ft-lbs of loosening torque, and a 30-minute rapid charge. The #1 Best Seller status with 4.5 stars from 1,547 reviews says it all.
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