Use these in-ear design earbuds with microphone and remote control to enjoy music as well as hands-free calling while easily accepting and ending calls from your headset. Lightweight design is compatible with all smart phones, tablets and laptops. Earbuds include a built-in mic, remote for smart phone, three sizes of soft, silicone ear tips to provide one that fits your ears perfectly. 4' cord features a 3.5mm straight plug so the earbuds are 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; 10mW.