Use these in-ear design earbuds with microphone and remote control to enjoy music as well as enjoying hands-free calling, while easily accepting and ending calls from your headset. Comes with three sizes of soft, silicone ear tips to provide one that fits your ears perfectly. Compatible with: Blackberry, HTC, iPhone, LG and Motorola. Driver: 9mm. Impedance: 16 ohms +/- 15 percent. Magnet: Neodymium. Sensitivity: 92+/-dB at 1KHz. Frequency response: 20-20,000 Hz. Max. input; 5mW. Plug: 3.5mm straight plug. Cord length: 4'.