Sale! The ‘EQ Tool’ Equalisation Tool $255.00 $185.00 The ‘EQ Tool’ Equalisation Tool The EQ Tool is a digital device developed to improve your equalisation skills. By inflating air in your middle ear while at the same time into your equalisation tool, the pressure in your upper airway increases and measured. The Eustachian tube opens, and the eardrum vibrates. Air pressure is measured by a wireless sensor connected to a mobile device with the data acquired we can be analysed and recorded using a dedicated app. The EQ Tool is a very helpful and beneficial device for all those who practise diving. Training and optimising your equalisation techniques such as advanced or sequential Frenzel and the Mouthfill, as well as improving the air-flow to the upper airway with the reverse packing or the abdominal contractions will be possible with this EQ Tool. Temporary with SPECTACULAR Discount!