I've fallen in love with toothpicks recently. I built this to run 2 or 3s. You can get about 3:30 min of hard flying out of a 520mah 2s or 1:45-2:00 of hard flying out of a 350mah 3s. Pick your poison they are both deadly!! Thanks to James Sterger aka MayDayFPV for hooking me up with this frame after winning a toothpick night race down in TX. It flies great and was super easy to build! It weighs 55g dry.