This power saw is battery-powered, so no need to bother with cords and such. It has a voltage of 12 volts and weighs 1.4 kg, so it's not that heavy to carry around.
See everything within Bosch DIY
From OnBuy
Bosch UniversalCirc 12 Cordless Circular Saw (Without Battery and Charger)
This product is also available at 1 unverified merchant.