KZ Z1 TWS True Wireless Bluetooth v5.0 Earphones Dual magnetic Dynamic Earbuds T

TRI I3 10mm Planar Magnetic 1 Balanced Armature 1 Dynamic Driver: 8mm Composite Dynamic Balanced Natural Sound Durable CNC Metal Shell Standard Detachable MMCX Cable Impedance: 15Ω Earphone sensitivity: 103dB Frequency range: 20-40000Hz