Energy Sistem Blue Unisex Bluetooth 3 Wireless Headphones

Energy Sistem 3 bluetooth headphones with foldable band, long battery life with Mic (Blue)Features:Headphones with Bluetooth 4.1 technology compatible with all your devices.Turn the volume up or down, switch to the next or previous track. Control playback from the device.Connect them to any music player using the audio cable provided.Self-adjusting headband and ear pads that rotate 10 degrees to provide perfect fit.Folding system to store them anywhere.Lithium-polymer battery with up to 12 hours of battery life to keep up with your everyday life.Frequency response: 20 Hz - 20 KHzDiameter: 40 mmSPL: 94 - 3 dBImpedance: 32 OhmMICROPHONESensitivity: -42 dB - 3 dBNoise cancelling systemCONNECTIVITYBLUETOOTH 4.1. Distance range: 10 mBATTERYType: Lithium-polymerBattery capacity: 200 mAhCharging time: 1.5 hours.Battery life if volume is at 50%: 13.5hours. *Battery life if volume is at 70%: 12 hours. *Battery life if volume is at 100%: 9 hours. * *[Approximate battery life. Higher volume means higher battery consumption]OTHER FEATURESTHD