The Philips Avent Single Electric Breast Pump, designed with Natural Motion Technology to mimic baby's natural sucking rhythm and facilitate milk flow. Here's a quick guide on how to use the buttons and functions shown on the pink pump motor: 🔘 Control Button Explanation: Power On/Off Button (at the bottom): Press and hold to turn the device on or off. You can short-press it during a session to pause suction and resume. Mode Change Button (%): Manually switches between Stimulation Mode (to encourage milk let-down with quick pulses) and Expression Mode (to effectively draw out milk). Note: The device automatically transitions from stimulation to expression after 90 seconds. Arrows (Up and Down): To adjust the suction levels according to your comfort; the device offers 8 stimulation levels and 16 expression levels.