Product description it will not hurt your ears, which is different from ordinary headphones or earphones.
Second:When you normally answer the phone or enjoy the music will not block your contact with the outside world.
You can hear the voice of the outside world, whether you are listening to music or walking in the street! Car horn, doorbell, talk with friends, can be normal.

Product parameters
Quantity: 1pcs
Size:14x14x5cm (L x WxH)
Cable range:2m
Weight:20g
Impedance: 32 (Ω)
Sensitivity: 102±3(dB)
Speaker diameter: 40 (Φmm)
Frequency response range: 20-20000 (Hz)
Model: X19B
Plug type: 3.5 mm Universal standard
Package:
1 x 3.5MM Wired headphone
Maintain contact with the outside world:Listen to music without blocking your ears,also can listen to surrounding sounds, giving an awareness of what is going on around you,hear traffic coming or ringing bell when running,cycling or driving.
3.5mm Interface Wired Headset: Plug and play, no need to charge. Compatible with most devices, like smartphones, tablets, PC, notebook, etc.
Built-in noise reduction microphone: Can provide a clear call effect. With mute button to control the microphone on and off.
Lightweight body (20g), IPX4 water resistant rain and sweat, suitable for use in sports such as running, cycling, also for online class, live broadcast, learning.