I-Driver 12V lithium-ion. Ultra-Compact Head Length¿—¿3-1/2 total head length is three times shorter than that of key competitors. 90° Articulating Head¿—¿Rotates and locks into five positions for increased versatility. 7+1 Electronic Clutch¿—¿Precision driving eliminates over torque in soft base materials. Drill mode allows pilot and other small bore holes. Bosch Lithium-Ion 12V Max Batteries¿—¿ Advanced Lithium-Ion technology for optimal battery life, runtime and power.