Product description: RF-630 professional hair cutting machine from Dingling is a durable, sharp, and adjustable hair cutting machine. It provides a rechargeable high-performance battery, and the backup battery increases the functions of this device. With the integrated precise processor, users can now regulate the speed of the shaver. It features a precise steel blade that ensures a stable and accurate cut. The inclusion of wireless connectivity makes this device easy to use. Features: The shaver has a slim line. It is wireless. USB charging: 5 volts. With a sharp blade that allows for easy and safe shaving. Voltage 220-240 volts 50/60 Hz.