The product integrates the fashionable Sun-bonnet and Bluetooth Headset which is equipped with built-in speaker and microphone、 supports hands-free function.The Bluetooth Music Hat provides a fun、 cool way to make and take calls on the go. Simply connect the Bluetooth Music Hat with smart phone、 Tablet PC and other Bluetooth-enabled devices via Wireless Bluetooth Technology. The Bluetooth Music Hat let you becoming fashionable in the crowd and bring you much convenient and fun. Comfortable to wear、 protecting you from the scorching sun and the dust from the air in summer days during travel or sport. The Stylish Hat can perfectly match with your sporty and casual clothing.The multifunctional button controls Power ON / Power Off、 Answer / Hang up and redialing the last number.The "+" / "-" button controls the Volume Up / Volume Down and Previous song / Next song. With Built-in high-quality rechargeable Li-ion battery. With LED indicator light and powered by the included Micro USB Charge port.Specifications: Bluetooth Version : V4.0 + EDR、 Class 2Supports A2DP、 HFP、 AVRCP protocol.Frequency range: 2.402-2.4835GHzInput Voltage / Input Current: 5.0V / 500mA Output Current: 350mAOperating power: 0.15WTransmission Distance of MIC: ¡Ü1mSensitivity: > -85dBmDegree of distortion: <1% Available distance: 10mBuilt-in rechargeable Polymer Lithium battery 3.7V / 140mAh.Charge time: 2 hoursTalk time: about 3.5 hoursColor: Black、 Blue (Optional)Main item weight: 92g / 3.27ozPackage size: 26.0 * 21.0 * 4.0cm / 10.23 * 8.26 * 1.57inPackage weight: 151g / 5.34ozCompatible Models:For Most SmartphonePackage list: 1 * Fashionable Bluetooth 4.0+ EDR Music Hat1 * USB Cable1 * English User Manual