Frequently Asked Questions

Product Features

The NUNA necklace uses built-in biosensors to monitor physiological signals such as heart rate variability and skin electrical activity, thereby analyzing the user’s emotional state. these data are transmitted in real-time to the accompanying app, where users can view detailed emotion reports and suggestions.
The Nuna smart necklace accurately monitors your mood in real-time, offering AI coaching and a mood timeline for deeper self-insight. It features a stylish design, durability, low power consumption, secure data protection, and integrates with health apps, providing excellent value for mood management.
Nuna is not a medical device and cannot diagnose or treat mental disorders. It serves as a gentle emotional awareness companion, helping users understand emotional patterns, build calm routines, stay grounded with gentle vibration guidance, and reflect instead of react. For anxiety, panic or other mental health concerns, professional support is recommended.

Use related

No, using the NUNA necklace does not require any subscription fees. Once you purchase the device, you can fully use all its features without any additional ongoing costs.
The battery life of the Nuna necklace is designed to be very long-lasting and efficient with Max. 24 hours under stand by mode.

Purchase and after-sales

We offer refund and return services. Please refer to the website's refund policy for details.ongoing costs.
All orders enjoy free shipping, specific time depends on the region.
The app sets "calm" as the default background mood to save your phone’s battery. This setting ensures efficient emotional data tracking without draining power. Your actual mood variations are still recorded. You can view them in the hourly "Moment" section of the app, along with corresponding emotional events. We’re constantly optimizing the emotion recognition algorithm, and your feedback is highly valuable.
Nuna is not a medical device and cannot diagnose or treat mental disorders. It serves as a gentle emotional awareness companion, helping users understand emotional patterns, build calm routines, stay grounded with gentle vibration guidance, and reflect instead of react. For anxiety, panic or other mental health concerns, professional support is recommended.
The Nuna device automatically enters sleep mode when the battery is running low to help conserve power. The Nuna device automatically enters sleep mode when the battery is low to conserve power. To avoid this, you can enable battery notifications in the app. You’ll get an alert when the battery drops to 20%, reminding you to recharge in time. If it’s already in sleep mode, place it on the charging pad to recharge; it will resume normal function once the battery level rises. We’re optimizing power management via future OTA firmware updates, and appreciate your understanding.
Please try the following steps based on the LED light on your charging case: 1. Green LED on the charging case: Long press the case button to enter pairing mode. Open the app, go to the device scan page, and tap Refresh. 2. White LED on the charging case: Take the device out and wait for the LED to turn off. Place it back in the case until it flashes green, then repeat pairing and tap Refresh. If it still doesn’t connect: Take the device out, wait for the LED to turn off, place it back in, and short press the button on the case to reset. Tap Connect in the app next to the device name. If needed, repeat the reset and pairing process one more time. After successful connection: We recommend updating your device firmware to the latest version: Open the app → Me → My Device → Firmware Version → Update. Stay close to the device and keep Bluetooth on during the update. Most connection issues are resolved by these steps. If you still experience problems, please let us know and we’ll assist you further. Thanks for your patience!

Privacy and Data Security

We take your privacy and data security very seriously. Nuna uses advanced encryption technology to protect your personal information, ensuring that all data is secure during transmission and storage. We will not sell or share your data with third parties, so you can use our products with confidence.

More Questions?

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