Airtec Master35 refurbished. 
3 months manufacturer's warranty. 
Max torque: 1750 NM 
Low vibration level, Maximum 16 minutes of use per hour = 320 fixings. 
Cordless machines up to 4 minutes per hour (without extensions). 
Weight 18 kg. 
Work upright by using an extension. 
Waterproof. 
No danger of electrocution like the cordless impact wrenches. 
Option to drill sleepers.