UPDATE: I bought them about 7 months ago and now they are completely dead I'm not sure how long they should last but I've had them for about 1 7 months, Used 5 hours a day, 3-4 days a week. It wasn't a big investment but I'm very disappointed that they stopped working. The sound is great, they are comfortable as the neck strap is where the weight is so real headphones are very light in your ear. The battery lasts about 7 hours without charging.
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