“How long, on average do the rechargeable batteries last before they have to be replaced and how much do they cost?”

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• 25 hours

  Answered by Smith 11 years ago

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• The actual battery life cannot be predicted and will vary based on product settings, usage patterns, battery and environmental conditions. The batteries in the Sony MDRRF985RK Headphones provide approximately 25 hours charge with a 3.5 hour charge.

  Answered by SonyListens 13 years ago

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