The ES-250ES blowers are powered by a 25. 4 cc 2-stroke low emission engine, producing 710mÂ³/h air volume at an air speed of 71m/sec. Weighing just 4. 6kg and with very easy to use operator controls and features a new rotational control features that reduces the stress on the users hand, wrist, and arm – providing neutral balance compared to other handheld blowers, making it suitable for both professional and domestic users. The Echo ES-250ES blowers are fitted with the Echo Easy Start System, which means that the operator requires greatly reduced pulling power on the starter system compared to other blowers and there is no kick-back effect in cranking. A metal shredding blade mulches leaf litter and debris by a ratio of 12:1 and then will either collect into the large capacity bag or blow into a pile for convenience. Special noise reducing technology for use in sensitive residential, educational or hospital environments. As with all quality Echo power tools, the Echo ES-250ES blowers have a five year domestic use warranty. Professional users have the benefit of a two year warranty.