Description: 6D Surround Bass HiFi Shocking overweight low audio Built-in noise reduction clear call Upgrade Cavity Restore Sound Quality Metal cavity for special sound quality Upgraded the front and back of the headphones Let the music feel three-dimensional Sliding tuning Compatibility HIFI Bulletproof wire In-ear comfort Synthetic material Graphene diaphragm Oxygen-free tinned copper Alloy sound transmission network Comfortable in the ear ercise does not fall off Side in-ear design, cut according to the auricle are angle Comfortable fit at 60 elevation Earphone In-depth 6mm Long wear No pair Stable Not easy to fall off Professional Sound System The professional sounding unit is reorganized, and the high, medium and low frequency are precisely connected, the sound is purer and the sound quality is better. Good Material, Good Sound Using the industry's rare 32-core, oxygen-free copper wire audio transmission is faster and more stable TPE outside Anti-tearing film 32 core oxygen free copper core Specification: TypeEarbud (In Ear) ModelS2000 Number of EarpiecesDouble Type : Wired Plug type : Straight type Sound principle: dynamic circle Frequency response range: 20~20000 (Hz) (Hz) Impedance: 32 () Sensitivity: 108 (dB) Distortion rate: 1 (%) Horn diameter: 10 (mm) Earplugs / earmuffs material: ABS Headphone wire material : TPE Weight: 40 (g) Package Includes: 1x S2000 Earphone