... Headset B-014 1,Bluetooth+MP3 2,Memory 1GB-4GB 3,Sport design,fashion,super light Sport Bluetooth Headset Sport MP3 ... ,Memory 1GB-4GB3,Sport design,fashion,super light FeaturesBuilt-in 3.7V 150mah rechargeable lithium batteryUSB port chargedBattery Support: >4 hoursUSB Edition:USB 2 ...