Best Brass Warm-up nano (mute)

Just insert 'Warm-up nano'in your Ww(Cool Jazz style*), and it reduces instrument output to a whisper while maintaining the full tonal characteristics of your favorite mute. The pitch, intonation, how it speaks...etc. All of which are kept as it is, so you can always practice with a familiar feel.

As a Buzzing device.

Put your mouthpiece in Warm-up nano, and you can do a buzzing practice. Internal design of nano is accoustically well considered, and it generates appropriate resistances. As a result, your lips will get much more natural vibration.
With the accompanying strap-holder, it can hang on any bags or instrument cases. Now, hit the road and Warm-up anywhere at anytime.