... 1,Bluetooth+MP3 2,Memory 1GB-4GB 3,Sport design,fashion,super light Sport Bluetooth Headset Sport MP3 Bluetooth Headset B-0141 ... ,Bluetooth+MP32,Memory 1GB-4GB3,Sport design,fashion,super light FeaturesBuilt-in 3.7V 150mah rechargeable lithium batteryUSB port ... degreeLED indication lightSoften and smooth rubber material designed for sportSuper Light: Only 36g