This user-friendly balloon pump machine offers both manual and automatic pumping modes with a fast but consistent inflation rate to prevent your balloons bursting. Input voltage: 100-120V, Frequency: 50/60Hz. This balloon air pump features a portable size and design with an easy-grip handle so you can take it to your party location for on-site balloon filling. This quality electric balloon pump will inflate hundreds of decorative latex balloons in super-fast time, and commonly used in some activities/ festival/ party/celebration/ decoration.