Amazon.com: KZ ZAX in Ear Headphones 7BA+1DD Hybrid 16 Drivers HiFi Noise Cancelling in Ear Monitor, Zin Alloy Shell Metal Wired Earphone with 3.5mm Jack Detachable 2 Pin 0.75mm Cable (No mic, Black) : Electronics

Sensitivity: 113dB

1 Dynamic +7 Balanced Armature Leapfrog Performance, Another Innovation From Hybrid Technology.
Light Luxury Pearl Chrome Plating,The Cast Zinc Alloy Shines Brightly,effectively prevents metal oxidation, and is still beautiful as new after long-term use.
Standard High-purity Silver-plated Upgrade Cable, The Sound Base Of 100 Wire Core ls transparent and Pure. The standard high purity oxygen-free copper silver- plated wire can effectively reduce distortion, and the superior ratio of 4-strand 25-core makes the sound bottom crystal clear.
Dual Magnetic Circuit Composite.Dynamic Unit, Equipped With 10mm PEK Spring Diaphragm.
Special Research And Development 50024 BA Combination, Covering Medium And High Frequency Range And Above.