As the Indian market gets flooded with all kinds of wearables and wireless earphones/headphones, monitoring your daily audio exposure is critical as long exposure to sound can impact hearing abilities in the long term. On the World Hearing Day that fell on Wednesday, your iPhone, iPod touch, or Apple Watch can measure your headphone audio levels so you can monitor your audio exposure over the past hour, day, week, month or year in the Health app. The Noise app on Apple Watch also measures ambient sound levels in your environment to identify when the decibel level could negatively impact your hearing.