1. Please try to use gmail mailbox to register your account
2. Please check whether the verification code is sent to the "spam mailbox"

1. Black plus app binding is required
2. Confirm whether the mobile phone system meets: Android 5.0 and above, IOS 10.0 and above
3. Whether the watch is in the QR code interface. If not, please reset the watch and then scan the code for binding
4. Is the Bluetooth of the mobile phone system paired with hey + watch? If yes, please cancel the pairing with the watch in the Bluetooth list on the mobile terminal, and then continue to bind and connect with the current mobile phone
5. Has the watch been bound with other mobile phones around you? If yes, please enter the Bluetooth list of other mobile phones, disconnect the pairing with the watch, and then continue to bind and connect with the current mobile phone
6. Please try to restart Bluetooth
7. Please try to press and hold the side key of the watch for 15s, and bind again after restart

1. Whether the watch has been turned on and is in the QR code interface. If not, please reset the watch and then scan the code for binding
2. Is Bluetooth on
3. Whether the location permission, network permission and Bluetooth permission of black plus app have been opened according to the guidance
4. Please try to restart the Bluetooth of the mobile phone, press and hold the side key of the watch for 15s, restart the watch, and then bind again
5. Please check whether it is connected by other mobile phones

1. Download the latest version of heijia app (scan the QR code of the watch screen to download, or search for" heijia "app in the app store and app store)
2. Log in / register black plus app
3. Click bind Watch
4. Scan the QR code of the watch screen, or search the binding manually

1. Has the app and firmware been updated to the latest version
2. Please try to restart the Bluetooth of the mobile phone, press and hold the side key of the watch for 15s, restart the watch, and then reconnect
3. Is the Bluetooth of the mobile phone system paired with hey+ Watch Ait? If yes, please cancel the pairing with the watch in the Bluetooth list on the mobile terminal, and then continue to bind and connect with the current mobile phone
4. Has the watch been bound with other mobile phones around you? If yes, please enter the Bluetooth list of other mobile phones, disconnect the pairing with the watch, and then continue to bind and connect with the current mobile phone

1. Whether the distance between the watch and the mobile phone is too far. If it is more than 7 meters away, the effect of Bluetooth connection will be weakened
2. Check whether the Bluetooth of the mobile phone is turned off or the power saving mode is turned on
3. In order to maintain the always connected state, it is necessary to keep the black plus app in the active state without being terminated by the system.
4. How to open the background operation permission of Android mobile phone: enter the black plus app - my - background operation, select the corresponding mobile phone model, and open the permission according to the instructions
5. When the app exits the background operation, the IOS system may automatically close the background process, resulting in the disconnection of the connection. It is recommended to pair with the system Bluetooth, so that even if the process is terminated by the system, the message notification and other functions will not be affected
6. The Bluetooth of the mobile phone is abnormal. Please try to restart the Bluetooth of the mobile phone and the watch

1. When using the watch for the first time, you need to connect it to the charger and turn it on, or press and hold the key for 2S
2. Check whether the watch is dead. It needs to be connected to the charger and turned on
3. If the watch is abnormal, press and hold the key for 16S to restart

If it is an Android phone, please follow the steps below:
1. You need to turn on the message reminder notification function in the black app and turn on the notification switch of the corresponding app
2. You need to open the notification authority according to the guidance, and select the relevant authority as [always allow]
3. It is necessary to keep the watch and mobile phone Bluetooth connected. The notification function of Android mobile phone needs to keep the black plus app running continuously in the background, and set the "background operation" as required
5. When the do not disturb mode is turned on, the message is not reminded and does not vibrate
6. Please try to unbind the watch, uninstall the app, rebind and enable all permissions according to the guidance prompt

If it is an IOS phone, please follow the steps below: 1. It is necessary to turn on the message reminder notification function in the black plus app and turn on the notification switch of the corresponding app 2. You need to pair with the system Bluetooth and allow to open [share system notification]

The step counting algorithm is to calculate the user's steps through the data of the acceleration sensor and a certain algorithm. Some regular movements will be mistakenly counted as step data (continuous wrist activity / vibration, etc.). Feedback can be submitted in the app. If the description is not accurate, we will arrange R & D engineers to continuously optimize.

1. After unpacking to confirm whether the headset has power (when the power is insufficient, please charge first);

2. Long press long press multi-function key for 3 seconds, the blue light is always on for 3 seconds, red / blue light alternately flashing, accompanied by a ""drop"" tone;

3. The phone open the Bluetooth search headset, from the Bluetooth list, find ""Runner"", and click connect, open the music player to play;
4. There are volume keys on the headset, you can directly adjust the volume, double-click the volume key to cut the song.

We ship to countries and regions below:

Region/Country: the United States