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Describe: 【Bluetooth Headphones & Sports Speaker 2 in 1】Bluetooth speaker cap allows you to listen to music without wearing extra headphones. Microphone so you never miss a call. Great for gym, fishing, running, skateboarding, climbing, camping, skiing and other outdoor activities. 【Wireless Bluetooth Technology】The wireless music hat can be paired with any Bluetooth-enabled smartphone or tablet faster and easier. 10m wireless range, provides up to 6 hours of playing music or talk time, and 48 hours of standby time. Perfect for outdoor sports. 【HIGH QUALITY AUDIO】The bluetooth speaker cap has excellent stereo quality output and can be quickly and easily paired with your smartphone or tablet device. True HD HIFI sound with excellent sound quality. Let you enjoy music anytime, anywhere. 【Perfect Electronic Gift】This bluetooth baseball cap is a perfect Christmas, Halloween, Thanksgiving, New Year's Day and birthday gift for men, women, boys and girls. The perfect gift for everyone. 【Stylish, Comfortable and Washable】Simple panel display on the ears of the bluetooth wireless hat has 3 prompt buttons. Basic controls with pause/play music and the ability to answer calls, skip songs and control volume. bluetooth parameters 1. Wireless transmission distance: 10M 2. Battery capacity: 200mA 3. Frequency range: 20-20KHZ 4. Sensitivity: 90DB 5. Impedance: 8 ohms 6. Speaker size: 40mm 7. Charging time: 2 hours 8. Talk time: 4-6H 9. Bluetooth music time: 3-4H (70% volume) 10. Forehead part fabric: acrylic 11. Size: 29*24*13cm (expanded) packing list: Bluetooth speaker cap*1 Charging cable*1 Manual*1