Material: ABS Voltage: DC 5 V Size: 140x180mm [Conversion: 1 cm = 0.3937 inches, 1 inch = 2.54 cm] Charging current: 500MA-1.2A Power supply: USB or lithium battery Battery capacity: 2000 mAh Uses the lithium battery for the power supply, optional high-capacity batteries for service. USB support-free battery; 3 speeds and 360 adjustable tilt to reach the air flow exactly where you need it; Easily clips on any surface with a strong clip; Blades ABS plastic blades resistant to breakage.