Bluetooth Beanie Slouchy Knit HatwithHeadphones Built-in Microphone Speaker Hands Free Double Layer Wireless Music Skully Hat

General Usages: Gym: Running, Yoga, Rumba, etc. Outdoor sports such as running, jogging, skiing, skating, hiking, camping, fishing, dog walking, holiday traveling and so on Specification: Bluetooth Version: V3.0+EDR-V4.2+EDR Indicator: red for charging, off for fully charged Size: one size fits most Frequency: 2.402GHz-2.480Ghz Transmission Distance: 10m/33feet Battery: 3.7V/100-120mA Li-polymer Standby Time: 60-180hrs Charging time: 3-8hrs Continuous working time: 3.5hrs Package Contents: 1 X Bluetooth Headband 1 X Micro USB charge cable 1 X User manual