Detailed Product Description Basic parametersBluetooth Version: Bluetooth v1.2Frequency response: 2.4GHzSensitivity:-80dBmTransmission range: 10 metersMain PerformanceCharging time: 2-3 hoursApplicable models: Sony Ericsson: K510c, K530C, K550c, P1c, S500c, W300c, W350c, W380c, W580c, W610c, W710c, W760i, Z530c, Z550c, Z710cBattery Type: Built-in rechargeable battery