The drill is USB powered, making it to use with any standard USB port, eliminating the need for separate power sources The drill is designed for ease of use, making it suitable for both beginners and experienced users Precisely adjust your drilling with the three adjustable speed setting of the electric hand drill, which ranges from 5000 to 18000rpm Operating at a rating voltages of 3.7V, this tool provide power to handle even the most demanding tasks This handheld electric drill is a small size version, perfect for epoxy resin jewelry making, wood craft engraver, and projects, Manufacturer: Ruarby