With accurate torque control of ± 10% and electronic switch-off once the set torque has been achieved; extends service life of the rechargeable battery and the coupling. 21-stage coupling allows for high-precision calibration, two-speed gearbox, 1 drill setting, gear block for manual tightening, clockwise/anti-clockwise rotation, quick-change chuck 1/4". Included in delivery:2 Li-ion batteries 3.6 V, 1.5 Ah, 30-minute charging system for all 3.6 V Li-ion batteries, in plastic case with small parts magazine.