Find misplaced devices with Apple Watch
The Find Devices app 
on Apple Watch can help you locate Apple devices you’ve lost or misplaced. To find your Apple devices you must connect them to your Apple ID. See the Apple Support article Set up Find My on your iPhone, iPad, iPod touch, or Mac to learn how.
See the location of a device
If your device is online, you can see its location in the Find Devices app. For supported devices, Find Devices can locate the device even if it’s powered off, in low power mode, or if airplane mode is turned on.
Open the Find Devices app on your Apple Watch, then tap a device.
If the device can be located: It appears on the map so you can see where it is. The device’s approximate distance, time it last connected to Wi-Fi or cellular, and charge level appears above the map. An approximate location appears below the map.
If the device can’t be located: You see “No location” under the device’s name. Under Notifications, turn on Notify When Found. You receive a notification once it’s located.
Play a sound on your iPhone, iPad, iPod touch, Mac, or Apple Watch
Open the Find Devices app
on your Apple Watch, then tap a device.Tap Play Sound.
If the device is online: A sound starts after a short delay and gradually increases in volume, then plays for about two minutes. The device vibrates (if applicable). A Find My [device] alert appears on the device’s screen.
A confirmation email is also sent to your Apple ID email address.
If the device is offline: You see Sound Pending. The sound plays the next time the device connects to a Wi-Fi or cellular network.
Play a sound on your AirPods or Beats headphones
If your AirPods or Beats headphones are paired with your Apple Watch, you can play a sound on them using Find Devices.
For supported AirPods models, you can even play a sound on your AirPods if they are in their case.
Open the Find Devices app
on your Apple Watch, then tap a device.Tap Play Sound. If your AirPods or AirPods Pro are separated, you can mute one by tapping Left or Right to find them one at a time.
If the device is online: It plays a sound immediately for two minutes.
A confirmation email is also sent to your Apple ID email address.
If the device is offline: You receive a notification the next time your device is in range of your Apple Watch.
Get directions to a device
You can get directions to a device’s current location in the Maps app 
on your Apple Watch.
Open the Find Devices app
on your Apple Watch, then tap a device you want directions to.Tap Directions to open Maps.
Tap the route to get directions from your current location to the device’s location.
Receive a notification when you’ve left a device behind
To help keep you from misplacing your device, you can receive a notification when you’ve left your device behind. You can also set Trusted Locations—locations where you can leave your device without receiving a notification.
Open the Find Devices app
on your Apple Watch.Tap the device you want to set up a notification for.
Below Notifications, tap Notify When Left Behind, then turn on Notify When Left Behind.
You can also open the Find My app on your iPhone, tap Devices, tap the device you want to set up a notification for, then tap Notify When Left Behind. Turn on Notify When Left Behind, then follow the onscreen instructions.
If you want to add a Trusted Location, you can choose a suggested location, or tap New Location, select a location on the map, then tap Done.
Mark a device as lost
If your device is lost or stolen, you can turn on Lost Mode for your iPhone, iPad, iPod touch, or Apple Watch, or lock your Mac.
Open the Find Devices app
on your Apple Watch, then tap a device.Tap Lost Mode, then turn on Lost Mode.
When you mark a device as lost, the following occurs:
A confirmation email is sent to your Apple ID email address.
A message indicating the device is lost and how to contact you appears on the device’s Lock Screen.
Your device doesn’t display alerts or make noise when you receive messages or notifications, or if any alarms go off. Your device can still receive phone calls and FaceTime calls.
Apple Pay is disabled for your device. Any credit or debit cards set up for Apple Pay, student ID cards, and Express Transit cards are removed from your device. Credit, debit, and student ID cards are removed even if your device is offline. Express Transit cards are removed the next time your device goes online. See the Apple Support article Manage the cards that you use with Apple Pay.
For an iPhone, iPad, iPod touch, or Apple Watch, you see your device’s current location on the map as well as any changes in its location.
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