The Duratool SLD 900B is a high precision electronic screwdriver with the capability to be adjusted from 1-6 Nm (Newton-meters) of torque, and it offers 6 different speed levels for greater control. It has an ergonomic, pistol grip design for comfort and precision when tightening or loosening screws. It features a brushless DC motor, which offers a longer lifespan and improved durability, as well as higher efficiency. The SLD 900B also has an LED light either side of the display to assist with working in low light, as well as a lithium ion battery with a run time of up to 4 hours on a single charge.