A flashing blue light indicates that the cycle is currently active. The device operates for three minutes after a single button press. Each subsequent button press extends the session by an additional three minutes. This can be useful, as certain foods or food qualities might require prolonged exposure for optimal effect. For instance, pressing the button three times consecutively will extend the session to last nine minutes. The maximum session time is capped at 12 minutes, which can be achieved with four consecutive button presses.All button presses must be made within 6 seconds of the first press. The cycle cannot be extended once it has started.The cycle is considered finished when the blue light stops flashing.