Over at the Garage Journal forum, someone asked about the difference between Milwaukee Tool’s original M12 heated jacket, and the new one.
The main differences are that the new version has a fleece lining and an independently controlled pocket heating zone. Visually, you can tell the difference by the control buttons and LED indicators. The original style simply says has an M12 icon, while the newer style has an M12 icon and a hand graphic.
When shopping online, listings for the new version should explicitly mention pocket heat zones or 5 sewn in heat zones. The original version has 3 core heat zones while the newer one has 3 core heat zones plus two pocket heat zones.
USA model numbers for the newer style jackets are 2340 (red jacket), 2341 (red jacket kit), 2344 (black jacket), 2345 (black jacket kit).
International SKUs are a bit tricker, as it appears the same model number (M12 HJ Black) corresponds to the newer style jacket in the UK and original style in Canada and AUS/NZ regions.
Just to be clear, there’s nothing wrong with the original style, it’s still a great product. But for those who are specifically looking for the newer style, hopefully these tips help you out. The same differences apply to the red jackets, and as far as I’m aware the specialty colors (high-visibility and camo) are only available in the original style.
Buy Now(USA Styles via Home Depot)
Edit: the high-visibility version seems to have the fleece liner but no heated pockets, while the camo version is available in the new style (SKU 2343). The high visibility version is also the only one with a hood.