... microphone *double plugs *handsfree, in-ear Computer earphones and Computer dual-plug (Computer dual-plug DT-M019) *Feature: Metallic earbuds 1) Frequency ... protection. Only +/-1.5dB difference of two ears, uniform and mixed, avoid the hearing-impaired. Ear-protect: do not ... design ingeniously, care about the details, blend the natural environment and modern technology. *Package: 1) Each piece has the ...