The WORX dual battery cordless chainsaw simultaneously uses two 20V batteries for extra power and runtime. Additional safety features include a chain brake that stops the blade in less than half a second, steel bumper spikes and low kickback. Auto chain tension system guarantees optimum tension while tightening Quick stop chain brake for emergency Dual port charger can charge 2 batteries at the same time H: 740mm W: 243mm D: 277mm