40mm drivers; Bluetooth(R) V4.2; Freq resp: 20Hz-20kHz; Adjustable headband with folding design; Built-in microphone with easy access controls; Rechargeable 180mAh battery; Up to 3.5 hours of play time; 1.5 hours of recharging time; Includes USB charging cable; Silver
Warranty: One Year
Country of Origin: China,united States