The Jazz-i111 can dually produce good all detail sound quality and can be used as wired answering device for mobile devices. It has a comfortable fit with different ear plugs for user comfort plus a magnetic back side to keep them in place when not in use. Features -Oblique in-ear design for comfortable fit -High sound quality strong magnetic headphone monomer -Detailed sound quality, clear details and good sound quality -Wired answering and music selection -Compatible with IOS system -Fashionable and colourful -Comes with a high-quality storage bag Specification -Speaker specifications: 10mm neodymium iron horn -Sensitivity: 108 ± 3dB SPL at 1KHz 1mW -Frequency response: 20 ~ 20000 Hz -Rated power: 2mW -Maximum power: 8mW -Impedance: 32 ? ± 15% @ 1KHz -Microphone sensitivity: -39dB ± 4dB @ 1kHz, 0dB = 1V / pa -Frequency response: 100 ~ 10000 Hz -Pointing: Omnidirectional capacitive -Impedance: 2.2K? (Max) -Rated voltage: 4.5V -Rated input current: 0.25-0.45mA -+ Key: volume up --Key: volume down -Answer key: remote control answer and music selection function Click: answer phone function or music play / pause Double click: music next Press three times: Previous music Fully compatible with iPhone / iPad iOS system Support android phone microphone answering

the first function of music up / down depends on the phone brand What's in the box 1 x Magnetic deflection headphones 1 x Carry bag 2 x Sets of earplugs