Features: ideal for everyday use and sports resistant to dust, splashes and water due to the special anatomical shape, they hold well, do not fall out of the ears during active use. have a special, stylish design, great for men and girls stylish case with wireless and fast charging. tws function high-quality body materials characteristics: brand: celebrat headphone type: in-ear connection type: wireless features: tws (2 separate) active noise cancellation: no active noise cancellation headphone frequency range: 20-20000hz headphone sensitivity: 96db ± 3db impedance: 32 ohm; microphone type: dynamic microphone sensitivity: 42db; microphone construction: built-in headphone case microphone directivity: omnidirectional headphone battery capacity: 50mah; operating time in active mode: 4 hours charging time: 1.5 hours radius: up to 10 meters battery volume in case: 5v-550 mah; color: black package contents: headphones case replaceable ear pads micro usb