Bluetooth Headband Sweatband with wireless Headphones Speaker Microphone Sync Calls Music for any devices with Bluetooth function, Such as iPhone 8 7 6 6s plus 5s 4s iPad Samsung S7 s6 s5 s4 Sony LG Moto Google Pixel etc. － Handsfree Calling, reply any calls in 1 second and no need to break off your exercising. － Earbuds Free Music, enjoy music and no worry earbuds may fall down. － Eyemask with Music, falling asleep efficiently with your favorite music, and no light afttects you. Specification: Bluetooth Version: V3.0+EDR Frequency: 2.4026GHz-2.480GHz Transmission Distance: 10m/33feet Transmission distance of MIC: less than 1M Battery: 3.7V/100mA-200mA Li-polymer Continuous working time: about 3.5Hours Standby Time: 60Hrs or above Charging time: 2.5 hours Product Weight(g): 90g Product Size (L x W x H): 3.9 x 5.5 x 1.2 inches How to use: 1.Before using the Bluetooth headband, pls charge it via USB cable. First time charge should be more than 3 hours 2.Pairing:press ON/OFF button about 5 seconds, while red and blue slow flashing in alternative, it will automatically enter pairing mode. 3.Make sure you turned on the bluetooth on your phone, search headset model on it. 4.Select the Bluetooth model and click to connect. Package includes: 1 x Bluetooth Music Headband 1 x USB Charging cable 1 x User Manual