-   FAQ

•Currently, we have about 8.3 inches (21 cm) of goods in stock, and will be manufactured longer and shorter one later..
•Bluetooth 4 uses 1/10 of the electromagnetic wave strength of Bluetooth 3. •‘NUGUNA Solution’ is a Bluetooth 4,2 using model and It use radio waves to connect to application. •This device works between 2.402 and 2.480 GHz RF. NUGUNA Neckband was designed to work in accordance to the RF exposure guidance and regulations of the WHO and local governments when used with a mobile device.
•In Korea, it is sent by CJ Korea Express and the post office delivery service The basic shipping charge is free. •Except for Korea, we will send to EMS to ensure fast and accurate delivery. •Please refer to the product order page of the global shopping mall for shipping rates for each country.
•You can exchange or refund within one week of the purchase date •However, a shipping charge will be charged for exchange and refund without defect of the product. .
•Currently, English, Korean, Chinese and Japanese are available.. •It will be added to your request.
•In order to connect with the ‘NUGUNA solution’, should open the application and connect directly.
•After measurement, can be applied within 2 hours of working hours.
•Please contact us by e-mail g-sales@theufirst.com.