PowerSmart 20V 5-1/2 Inch Cordless Circular Saw with 1.5Ah Battery and Fast Charger, 3800RPM, Max Cutting Depth 1-7/16”(45°), 1-5/8”(90°) - Amazon.com
DEWALT Atomic 20-Volt Maximum Lithium-Ion Cordless Brushless 4-1/2 in. Circular Saw & Atomic 3/8 in. Ratchet with 1.7Ah Battery DCF513BWCS571E1 - The Home Depot