Cordless EM-JS-01 Saw
- Saw
- 420 watts
- Battery
- Alloy Steel
A 20-volt cordless saw with a 420-watt motor and 3200 RPM top speed, rated 4.1 stars from 91 reviews, reads as a capable jigsaw for detail cutting.
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How it ranks among the 265 saws we track
4.1★ across 91 Amazon ratings, Bayesian-smoothed toward the category average.
91 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
100+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 265 saws we track - how the scorecard works · full saws data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This cordless EM-JS-01 saw runs on a 20-volt battery with a 420-watt motor rated up to 3200 RPM, weighs 1.52 kilograms and is built with alloy steel components. It holds a 4.1-star average from 91 reviews.
The specs line up with a handheld cordless jigsaw: 20-volt battery power, a 420-watt motor and a top speed of 3200 RPM are all common figures for that saw type, and the EM-JS-01 model code echoes it too. Alloy steel is called out in the material spec, likely referring to internal gearing or the blade clamp rather than the housing. At 1.52 kilograms it is light enough for one-handed cutting over extended use.
- Cordless 20 volt saw
- 420 watt motor, 3200 RPM
- 1.52 kilogram weight
- 4.1 stars from 91 reviews
Who it's for
Fits users who want a cordless saw for curved or detail cuts in wood or thin material around the shop or job site. Not the pick for straight rip cuts in thick stock, where a circular saw is the better tool.
Strengths and trade-offs
Drawn from this product's published specifications.
- Cordless 20 volt battery power
- 420 watt motor with 3200 RPM top speed
- Light at 1.52 kilograms for one-handed use
- 4.1-star average is mid-pack for this batch
- Blade type and compatibility not specified
Performance notes
At 3200 RPM and 420 watts, the motor is sized for cutting through wood and thin material rather than heavy ripping, consistent with a jigsaw rather than a circular or reciprocating saw. Running on a 20-volt battery keeps the tool cordless, and the 1.52 kilogram weight keeps it maneuverable for detail work, though runtime depends on the battery pack used.
Specifications
| Brand | Cordless |
|---|---|
| Model | EM-JS-01 |
| Dimensions & fit | |
| Item Weight | 3.35 pounds |
| Capacity & performance | |
| Speed | 3200 rpm |
| Power & efficiency | |
| Motor Power | 420 watts |
| Power Source | Battery |
| Voltage | 20 volts |
| Construction & materials | |
| Material | Alloy Steel |
Other Cordless saws
How it compares
This product against the closest alternatives we track in saws.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Cordless EM-JS-01 SawThis product | 4.1 / 5 | 91 | 3.7 / 5 |
| DEWALT DCS334B SawDeWalt | 4.8 / 5 | 9,477 | 4.7 / 5 |
| SKIL 5280-01 SawSkil | 4.7 / 5 | 14,300 | 4.6 / 5 |
| Milwaukee 2719-20 SawMILWAUKEE | 4.8 / 5 | 6,485 | 4.5 / 5 |
| BLACK+DECKER BDEJS600C SawBLACK+DECKER | 4.7 / 5 | 11,123 | 4.5 / 5 |
Similar saws from other brands
Questions about the Cordless EM-JS-01
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is the EM-JS-01 corded or cordless?
It is cordless, running on a 20-volt battery.
What is its motor power and speed?
It has a 420-watt motor rated up to 3200 RPM.
How much does it weigh?
It weighs 1.52 kilograms.