# init(countdownDuration:schedule:attributes:appEntityIdentifier:stopIntent:secondaryIntent:sound:) Creates a configuration that behaves like a countdown. ``` init(countdownDuration: Alarm.CountdownDuration? = nil, schedule: Alarm.Schedule? = nil, attributes: AlarmAttributes, appEntityIdentifier: EntityIdentifier? = nil, stopIntent: (any LiveActivityIntent)? = nil, secondaryIntent: (any LiveActivityIntent)? = nil, sound: AlertConfiguration.AlertSound = .default) ``` ## Parameters `countdownDuration` The optional countdown duration. When set to a non-nil value, a countdown shows in the Lock Screen for the specified duration. `schedule` The schedule that determines when the alarm alerts. `attributes` The attributes of the alarm. `appEntityIdentifier` The entity associated with the alarm. `stopIntent` The intent to execute when a person stops the countdown. `secondaryIntent` The intent to execute when a person taps the secondary button. `sound` The sound to play when the alarm fires. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)