The best in noise cancelling¹ with two high-performance processors and feedback microphones 1. As of April 10, 2023. Environmental noise reduction according to Sony Corporation research. Measurements are performed in accordance with JEITA standards for the top 10 brands (based on market share) in the market for "True Wireless" style noise cancelling hearing aids. High quality ergonomic design for a stable and comfortable fit Impressive sound quality with a specially designed diaphragm unit Waterproof and long battery life (up to 24hs²) for daily use 2. 8 hours (plugs) + 16 hours (charging case), totaling 24 hours when using Noise Cancelling and Bluetooth. 12 hours (plugs) + 24 hours (charging case), totaling 36 hours when using Bluetooth with Noise Cancelling off. Superior calls with bone conduction sensor and noise reduction system (with artificial intelligence)