USB Rechargeable: One charge of 1200mAh built-in spider putter battery will save you an extra long usage time you can charge anytime, anywhere with computer, power bank, etc. Noise-Free operation The super low noise motor in the putter will help you make the luxury coffee drink without disturbing your family 3 upgraded controllable speeds our speeds putter with 3 speeds: low speed - medium - high speed, you can choose from different speeds to get perfectly beating or whisking.