describe: SMALL BUT STABLE: Each invisible earbud is only 0.23 inches and weighs 0.1 ounces. It is the world's smallest discreet Bluetooth headset. No pain when worn for a long time. Even girls and women with small ears can wear it. But it is very stable to wear. It's designed to fit over the cochlea so it won't fall out, and it's waterproof. It will be a good choice when exercising Long-lasting: Equipped with a 350mAh charging box, the earphones can charge the tiny earphones 3 times continuously. When fully charged, the hidden earphones can be used for 36 hours for listening to music or making calls, and have a standby time of 140 hours, making them convenient for going out without frequent charging. High-fidelity noise reduction: HI-FI sound quality, cinema-level sound effects, professional acoustic team tuning, enhanced mid-to-high frequencies of human voice, beautiful sound quality. True active noise cancellation lets you enjoy beautiful and clear music outdoors Stable connection: Bluetooth 5.0, stable connection, no lag, continuous connection. Mini wireless headphones can be used within 30 meters of your phone Touch play: By touching the earphones, you can change songs, pause/play, answer/hang up, voice assistant and other functions. Turn on Bluetooth on your phone and the headphones will automatically connect and pair after turning on the headphones. cover. Can be used in one ear or both ears. Put one back into the charging compartment and the other one can continue to listen to music. After charging, take it out and it will connect automatically. Age range description: Adult Package contents: 1 piece of earphones