We've had a few projects come through lately where a corded saw just wasn't practical — running extension cords across a warhouse floor or up on a roof is a pain, and we needed something with real power that wasn't tethered to an outlet, so I ordered this unit with the 185mm blade and the brushless motor.
It's pulling 5000 RPM at no load, which is better than a lot of the competition in this price range, and the brushless motor is the main reason — less heat buildup over a long cut, so it should hold up better than brushed units we've used before.
At 90 degrees it cuts about 90mm deep, which is enough for most framing lumber we'd hit, but at 45 degrees that drops to 45mm, so you're not using this for thick miters through hardwood — it's a trade-off, not a magic bullet.
The battery platform is Makita-type, which means our company can swap in spare packs from other tools (we usually have stock of those on hand), and the kit comes with two 4000mAh batteries and a color box — no charger included, so check that the lead time isn't delayed on those separately.
Basically voltge is rated at 21V, and teh dimnesions are 27 by 33 by 21 centimeters, which fits a small carrying case easily — we've got a few orders that needed portability more than raw torque, and this hits the balance.
Anyway, most buyers go with this for light commercail work, not heavy continuous demolition — the motor reliability is solid for intermittent use, just don't expect to rip through wet lumber for 20 minutes straight without a cooldown.