Main Features:LZ - A2s HiFi music in-ear earphonesDynamic and balanced armatures hybrid earphones, brings you more details about musicSoft earbud tips lie in your ear for noise isolationDrive-by-wire design and with microphone, support hands-free callsLess distortion, provides you high fidelity soundAluminum housing, fashionable appearance Brand: LZ Model: LZ - A2s Type: In-Ear Wearing type: In-Ear Function: Answering Phone,HiFi,Microphone,Noise Cancelling,Song Switching Color: Gold Driver type: Dynamic Connectivity: Wired Application: Computer,Mobile phone,Portable Media Player Plug Type: 3.5mm Cable Length (m): 1.2m Frequency response: 15Hz - 22500Hz Impedance: 16ohms Sensitivity: 115dB Input Power: 5mW Compatible with: Computer 0.145 Package weight: 0.176 kg Package size (L x W x H): 17.00 x 10.50 x 6.50 cm / 6.69 x 4.13 x 2.56 inches Package Contents: 1 x Earphones, 6 x Earbud Tips ( L / M / S ), 6 x Black Earbud Tips ( L / M / S ), 2 x Foam Earbud Tips, 2 x Two Layer Earbud Tips, 1 x Clip, 2 x Ear Hook, 1 x Chinese and English User Manual, 1 x Storage Box