They are the international measuring unit for noise:
- 40 dB(A): typical noise level inside a library
- 60 dB(A): the sound power of normal conversation
- 120 dB(A): the noise level of a plane during takeoff
Choose the preferred country to view local content and get a better experience.
They are the international measuring unit for noise:
Delivery
Delivery within 1-3 working days
Returns
30 days no quibble returns
Payments
Secure payments
