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My guess is about 40-50 hours. I wear them while I work all day and they only die about 40%.
Sorry, there was a problem. Please try again later.Hi Sonshyne, Thank you for the question! Usage hours may be different from the time depending on the settings for the headset functions and usage conditions. The available operating time of the WHCH720N with the battery fully charged is up to 35 hours with Noise canceling function/Ambient Sound Mode is ON and battery life up to 50 hours with Noise canceling/Sound Mode is off. For more information about the available operating time of these headphones, please check the Help Guide link found on our Sony Support Site. Turn down the world's noise with the long-lasting noise cancellation performance. Featuring Dual Noise Sensor technology and an Integrated Processor V1, the WH-CH720N allows you to fully immerse yourself in music without any distractions. Ergonomically designed to be lightweight, comfortable, and with up to 35 hours of battery life, you’ll almost forget you’re wearing it. Hope this helps! - Kris
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