1.100% Brand New & High Quality.2.Support Bluetooth & Wireless transmission.3.Built-in Microphone、enjoying hand-free call.4.Adopt high quality audio decode chip 、let you experience perfect sound quality.5.Built-in charging Battery and Built-in high sensitivity Microphone、 listening music any where.6.Unique water-proof design、using in bathroom、sand beach、 swimming pool. While leisure、 you can relax and enjoy wonderful music.Specifications:Bluetooth support: V3.0 +EDRRange: 10 metersTransmitting frequency: 2.4G HZPower supply: DC5V/100-120mABattery: 3.7V 500mAh lithiumCharging time: approx. 3 hoursOperating time: approx. 6 hoursFrequency response: 100HZ-20KHZOutput: 3wS/N Ratio: 75dbDistortion: 1.0%Weight: 150gSize: 88x83x45mmNote: Color may be little different due to monitor、 thanks for your understanding!