Sun Joe is honest about this saw in a way the category usually is not: it rates the 10-inch bar for 9.5 inches maximum and recommends 8.5, and prints both. A 600W brushless motor on a 24V nominal-21.6V pack is a modest machine, and at 9.3 lb it is three pounds heavier than Worx's 6.2 lb 10-incher for the same job. What it has is the 4.0Ah pack, double the energy of most 10-inch kits, and a charger that refills it in under two hours. It is also, as of now, the only handheld chainsaw Sun Joe's own store actually has in stock — the 18-inch SWJ701E, the 16-inch SWJ700E and the 48V 24V-X2-CS16 all show unavailable, which makes this the whole Sun Joe chainsaw line in practice.

Best for: Light pruning and storm debris on a budget, for someone who wants a bigger battery rather than a lighter saw.

Specifications

Engine class: 30cc class (placed by shipped bar length)
Voltage: 24 V
Kit battery: 4 Ah
Bar length: 10 in
Bar range: 10 in
Single-pass cut: about 8 in (bar minus 2)
Chain: Sun Joe does not publish pitch or gauge; replacement bar SWJ-10BAR is shared with the SWJ803E and SWJ807E
Weight: 9.3 lb, manufacturer-listed weight; Sun Joe does not state whether the battery is included
Power type: Battery
Use case: Homeowner
Warranty: 2-year manufacturer
Model: 24V-10CS-GRN

Manufacturer figures except the engine class and single-pass cut, which are derived here. What each spec means

4.0Ah pack in a 10-in kit
Rated 9.5 in max cut
Only Sun Joe saw in stock

Where it is strong

4.0Ah pack is double what most 10-inch kits include
Under two hours to a full charge
Sun Joe publishes a real maximum cut diameter and a recommended one, which most brands do not
Brushless 600W motor at a $130 sale price
Replacement bar is a $15 stock part shared with Sun Joe's pole saws

Where it falls short

9.3 lb for a 10-inch bar — three pounds over Worx's equivalent
Sun Joe publishes no chain pitch or gauge, so sourcing loops means matching the bar part number
24V nominal is really 21.6V under load, and it shows in dense wood
2-year warranty, the shortest in this group
The $130 price is a sale against a $179.99 list, so it will not always be there

Written from the spec sheet and the maker's documentation; owner reports for this model were too thin to summarize.