DIY price with good quality, professional quality engineer to control products. With third part quality management system. Volt:3.6V/4.8V ,600mAh Ni-Cd batteryNo-load speed: 150 RPMMax torque: 3 NmMotor: 380# motorLED light ,LED indicators,soft grip,3-5 hours charger time, packed in C/B or blister Cordless Screwdriver 3.6/4.8V