The br 450 c ef petrol backpack blower from stihl includes wide shoulder straps, anti vibration system and fingertip control'. '.strtoupper('c')omfortable and easy to operate, this blower is fitted with a powerful 63cc stihl 2 mix engine and produces speeds of 186mph. powerful enough to clear large scale areas such as parks and car parks'. '.strtoupper('w')ith electrostart and ergostart systems'. '.strtoupper('t')he electrostart system allowes the user to start and stop the blower at the touch of a button while the ergostrat helps the engine start smoothly with minimal pulling on the cord'. '.strtoupper('t')he manual starter is recommended when starting the engine at temperatures below 0 degrees.specifications and featurestype back pack blowerengine stihl 2 mixengine capacity 63.3cc 2.9kwfuel tank capacity 1.70lrunning time on full tank 77 minutesair speed mph 186max air speed with round nozzle mph  222weight kg 11.5sound power level 108 db asound pressure level 102 db amanufacturer warranty 2 year domestic, 1 year commercial