Press and hold the Hand button to turn on/off the pump. A short press will release the pressure. Press the + button to increase the pressure or press the - button to reduce it. The LED display shows the pressure intensity and battery charge level. - Cylinder length: 20 cm - Cylinder diameter: 7 cm - Includes 2 thickened silicone sleeves: Small with inner diameter of 2 cm and Large with inner diameter of 2.5 cm - USB Rechargeable

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