The difference between RunPhones and SleepPhones is the fabric of the headband. SleepPhones come in a fleece fabric as well as a breeze fabric (think swimsuit material). The RunPhones fabric is a moisture-wicking mesh material.
Charging time is 3 hours for a fully charged battery and battery will last 10 to 13 hours. There is light that indicates when the charging base is on and the light will blink (green) when it is charging.
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