The Battery Life rating is based on hours of typical, actual usage.
This score evaluates the product for use on airplanes and other similar kinds of travel. It takes into account noise reduction and portability, including case shape, case size, and weight. It also incorporates the battery life of the product, long-haul comfort, noise reduction (both active and passive), and sound quality. We generally consider wireless products to be more suitable for air travel.
This score evaluates the product when used for exercise and physical activity. It mainly takes into account comfort, whether or not the products are sweatproof and how secure are the earbuds or headphones while wearing them. We also consider products with wireless capabilities to be more suitable for this particular scenario
Podcasts & Audiobooks:3.0 This score evaluates the product when used solely to listen to podcasts or audiobooks. It takes into account sound quality and sound signature, to be able to keep voices clear and intelligible. It also considers battery life, when available, and comfort.
The Portability score is based on an overall assessment that includes volume and maximum dimension of the product (and case, if relevant), and its weight. Special features like foldability for headphones are also taken into account.