1 Multifunctional and Portable: Sleep music and sports are three-in-one so you can directly enter the gym or cross-country running from without changing equipment It is very light and suitable for travel suitable for running yoga and other sports activities 2 Long-lasting Power Life: 180mAh continuous battery life for about 12H Outdoor travel is not afraid of power failure let the singing accompany all the way 3 High-quality Material: The use of acrylic fiber + spandex material has good comfort moisture absorption and perspiration flexible material suitable for the size of the head and will not cause head tightness 4 Wide Receiving Range: The Bluetooth receiving range of 20 meters even if you whisper softly the other people can hear your voice clearly and the whole process is comfortable and without delay 5 High Cost-effective: It also has the attributes of Bluetooth headset headband hairband and wrist brace and it can be removed and cleaned Specifications: Color: pink rose red camouflage green lake blue black hemp gray Material: acrylic + spandex Size: about 25 5*7 cm/10 04*2 76 inches Packing List: 1 * Headband 1 * Introduction 1 * Data Line