Our pobling nut 25.5 is manufactured and made in KOREA. The product is created intentionally to have a light feel for daily use. We can assure you on the product quality and effectiveness.
The vibration of the nut 25.5 will be triggered and in vibrating mode only when both the Y head and the contact surface are triggered.
This is to ensure that the product is being used rightly during gua sha-ing.
The device is very sensitive to capture the movement and stroke of your gua sha. If you do not use it rightly, the device will not vibrate. Hence, the device has the capability to capture if you are using the product correctly for the benefits it is intended to have.