It beeps when you put it in your ear. Noise reduction works well, but for certain purposes. For example, you can reduce, by 60 percent, the noise from the fan when you sit on the toilet. Also works well for any uniform humming noise, not suitable for dampening other noises. Can be worn 24/7, do not fall out and do not interfere.
Headphones Sennheiser CX 300-II, black
318 Review
Huawei Freebuds Pro MermaidTWS with Active Noise Cancellation - Silver Frost
299 Review
🔴 Sleek Mystic Red Samsung Galaxy Buds Live with Active Noise Cancelling - Wireless Earbuds
274 Review
Apple AirPods Pro RU wireless headphones, white
258 Review
Purple Philips SHE3590PP/28 In-Ear Headphones - Superior SEO
189 Review
Massdrop x Koss Porta Pro X On-Ear Headphones: 🎧 Noise-Cancelling Mic, Voice Assistant, Track Skip | Collapsible Midnight Blue
314 Review
🎧 Experience Unmatched Audio Quality with Marshall Major 4 Bluetooth Headphones
104 Review
Bose QuietComfort 25 Acoustic Noise Cancelling Headphones with 3.5mm Wired Connection for Apple Devices - Black
43 Review