Description Looking for a headphone to get clear away from environment noise for your travel and office? Craving for a headset with superb sound quality in your enjoying music and movies? AN02 grants you a quiet space of Perfect Hearing Protection via Superior Sound Quality of music and movies Features 1. Advanced powerful reverse noise cancelling technology, effectively reducing 90% unwanted background noise 2. Noise cancelling by 40mm drivers, whole piece forming corona diaphragm guarantee the top level of unanimity for crystal clear high quality sound 3. 3.7V/370mAh Polymer Li Battery, working up to 50 hous, 4. Specially designed sound on/off function left/right ear, easy to talk and perceive external environment condition, maximizing safety awareness of wearing headphone 5. Over ear design ear muffle, with high grade memory-inert-sponge filled inside the protein cortex, comfortable for long time wearing without fatigue 6. Inline microphone supports calling, answer/hang up, volume up/down, last/next song, play/pause Specifications Model: INSERMORE AN02 Dimensions: 7.3*6.7*3.0in (L*W*H) Inner Earcup Dimensions: 2.38*1.58in (L*W) 1. Item: Active noise cancellation headphone 2. Working voltage:3.7V 3. Max input power: 500mW 4. Max output power: 90mW 5. Noise cancellation depth:20dB 6. Noise cancellation frequency range: 50-1000kHz 7. Signal-Noise Ratio(SNR):>=90dB 8. Battery Capacity: 370mAh 9. Battery working time: about 50h 10. Speaker frequency range: 18-20kHz 11. Speaker sensitivity:115dB 12. Weight:190g Package Includes: 1x ANC headphones 1x 3.5mm Aux cable with mic 1x 3.5mm Aux cable 1x USB charging cable 1x Airline adapter 1x User manual 1x Carrying Case