Bose Bose SoundSport Pulse Wireless Headphones, Power Red (With Heartrate Monitor)

Color:Power Red Allow up to two hours to fully charge the battery. A full charge powers the headphones for up to six hours. The headphones will not play while charging.Note: Before charging, be sure the headphones are at room temperature between 41 degree Fahrenheit (5 degree Celsius ) and 104 degree Fahrenheit (40 degree Celsius )