Unprecedented integration of Moving coil and iron coil for more exquisite sound quality 20 Processes to forge a metal sound cavity Wire control Microphone 3 sets of earplugs to fit for any ear size Piston design, effectively reducing the adverse impact of the cavity resonance

Unprecedented integration of Moving coil and iron coil for more exquisite sound quality 20 Processes to forge a metal sound cavity Wire control Microphone 3 sets of earplugs to fit for any ear size Piston design, effectively reducing the adverse impact of the cavity resonance timbre, leading to better bass performance Kevlar fiber wire providing an excellent resistance to pull and perspiration resistant ability Easy-to-control, play music and make calls Comfortable fit with ergonomic contoured form Note: When being used with iOS, the Play key works as usual, but the Volume /- do`nt. Cable Length  1.25m Plug 3.5mm gold plated Sensitivity  101dB Resistance  32Ω Rated Power  5mW Standard  GB/T 14471-2013 Frequency  20-20,000Hz Dimensions & Weight (Main Product) Dimension 1.25m Weight 14g