1. Speaker diameter: 40mm
2. Impedance: 32 ohms
3. Sensitivity: 102±3db
4. Frequency response: 20-20000Hz
5. Pin type: 3.5mm
6. Cable length: about 120 cm
7. Material: TPE headphone cable, ABS earmuffs
8. Weight: about 230g

Features:
1. 40mm high-fidelity bass loudspeaker unit
2. Heat sensitive protein round high frequency earmuffs
3. Environmentally friendly and non-toxic surface spray paint
4. High-purity oxygen-free copper core wire to reduce electromagnetic interference
5. Both sides of the earphone are designed with a hidden stretchable structure, which can be pulled out 3cm in length at the same time, which can satisfy most people with different head circumferences.
6. Environment-friendly TPE material outer skin, flexible and durable, and feel comfortable
7. High-fidelity pins, with streamlined straight insertion reinforcement design, easy to use
8. Round non-pressure earmuffs, soft and breathable protein skin outer layer, space memory cotton with suitable elasticity, soft and comfortable
9. Adopt portable and foldable design, convenient to carry and store